giải đề sau 11. There is no easy solution _____ this problem.,12. There has been no sign of progress _____ this issue.,I. Complete the sentences with the present participle form of the verbs given.,

fly,learn,drive,invent
work,leave,study,take

,1. Before _____ on his trip, Tom renewed his passport.,2. After _____ the light bulb, Thomas Edison went on to create many other useful inventions.,3. Before _____ on a space mission, an astronaut will have undergone thousands of hours of training.,4. After _____ the stars, the ancient Mayans in Central America developed a very accurate solar calendar.,5. _____ that cigarettes cause cancer, many people have stopped smoking.,6. That medicine can be poisonous when _____ in excessive amounts.,7. He took a wrong direction while _____ to his uncle's house and ended up back where he started.,8. _____ with uranium, Marie Curie discovered two new elements, radium and polonium.,II. Reduce the adverb clause to a present participle or past participle clause.,1. Since he opened his new business, he has been working 16 hours a day.,2. I turned off the lights before I left the room.,3. While he was herding his goats in the mountains, an Ethiopian discovered the coffee plant more than 1,200 years ago.,4. Before they marched into battle, ancient Ethiopian soldiers ate a mixture of raw coffee beans and fat for extra energy.,5. After I met the film star in person, I understood why she was so popular.,6. I searched through all my pockets, so I found my keys.,7. When it was first brought to Europe, the tomato was thought to be poisonous.,8. Since it was first imported into Australia many years ago, the rabbit has become a serious pest because it has no natura,enemies there.,III. Reduce the adverb clause to a present participle clause if possible.,1. After the musician stopped playing, the audience stood up and clapped enthusiastically.,2. Since David was driving to work in the rain, his car got a flat tyre.,3. While David was driving to work, he had a flat tyre.,4. Tom worked hard in the garden all afternoon, so he took a shower and then went to the cinema with his friends.

Question

giải đề sau 11. There is no easy solution _____ this problem.,12. There has been no sign of progress _____ this issue.,I. Complete the sentences with the present participle form of the verbs given.,

fly,learn,drive,invent
work,leave,study,take

,1. Before _____ on his trip, Tom renewed his passport.,2. After _____ the light bulb, Thomas Edison went on to create many other useful inventions.,3. Before _____ on a space mission, an astronaut will have undergone thousands of hours of training.,4. After _____ the stars, the ancient Mayans in Central America developed a very accurate solar calendar.,5. _____ that cigarettes cause cancer, many people have stopped smoking.,6. That medicine can be poisonous when _____ in excessive amounts.,7. He took a wrong direction while _____ to his uncle&#x27;s house and ended up back where he started.,8. _____ with uranium, Marie Curie discovered two new elements, radium and polonium.,II. Reduce the adverb clause to a present participle or past participle clause.,1. Since he opened his new business, he has been working 16 hours a day.,2. I turned off the lights before I left the room.,3. While he was herding his goats in the mountains, an Ethiopian discovered the coffee plant more than 1,200 years ago.,4. Before they marched into battle, ancient Ethiopian soldiers ate a mixture of raw coffee beans and fat for extra energy.,5. After I met the film star in person, I understood why she was so popular.,6. I searched through all my pockets, so I found my keys.,7. When it was first brought to Europe, the tomato was thought to be poisonous.,8. Since it was first imported into Australia many years ago, the rabbit has become a serious pest because it has no natura,enemies there.,III. Reduce the adverb clause to a present participle clause if possible.,1. After the musician stopped playing, the audience stood up and clapped enthusiastically.,2. Since David was driving to work in the rain, his car got a flat tyre.,3. While David was driving to work, he had a flat tyre.,4. Tom worked hard in the garden all afternoon, so he took a shower and then went to the cinema with his friends.

Accepted Answer

{"userId":5316981,"userName":"Kiều Vy"}

I. Complete the sentences

1 Before leaving on his trip, Tom renewed his passport.

2 After inventing the light bulb, Thomas Edison went on to create many other useful inventions.

3 Before flying on a space mission, an astronaut will have undergone thousands of hours of training.

4 After studying the stars, the ancient Mayans in Central America developed a very accurate solar calendar.

5 After learning that cigarettes cause cancer, many people have stopped smoking.

6 That medicine can be poisonous when taken in excessive amounts.

7 He took a wrong direction while driving to his uncle’s house and ended up back where he started.

8 After working with uranium, Marie Curie discovered two new elements, radium and polonium.

II. Reduce the adverb clause

1 Since opening his new business, he has been working 16 hours a day.

2 I turned off the lights before leaving the room.

3 While herding his goats in the mountains, an Ethiopian discovered the coffee plant more than 1,200 years ago.

4 Before marching into battle, ancient Ethiopian soldiers ate a mixture of raw coffee beans and fat for extra energy.

5 After meeting the film star in person, I understood why she was so popular.

6 Having searched through all my pockets, I found my keys.

7 When first brought to Europe, the tomato was thought to be poisonous.

8 Since first imported into Australia many years ago, the rabbit has become a serious pest.

III. Reduce the adverb clause if possible

1 After stopping playing, the audience stood up and clapped enthusiastically.

2 Driving to work in the rain, David’s car got a flat tyre.

3 While driving to work, David had a flat tyre.

4 Having worked hard in the garden all afternoon, Tom took a shower and then went to the cinema.