Trợ lý học tập AI - Câu trả lời này chỉ mang tính tham khảo
8. d. experience
9. b. army-like
10. a. lack
Here are the completed sentences with the present perfect form of the verbs:
1. Peter has visited the science museum twice this semester for his project.
2. Have those explorers ever stayed overnight in the rainforest?
3. Sarah hasn't attended any concerts of that singer yet although she's a big fan of him.
4. We just enrolled in an online course in computer programming.
5. How many summer courses have you completed so far?
6. She's nervous as she has never tried bungee jumping before.
7. How long have you been working as a volunteer for the WWF?
8. The team is discouraged because they haven't won any competitions yet.
9. Mrs Molly has already traveled to five different countries in the past 2 years.
10. My brother has been a class monitor for three years in a row.
Here are the correct answers:
1. That tourist has backpacked **through** Southeast Asia since last year.
2. We wish to visit another landmark as we have already **explored** the ancient ruins of Rome.
3. My mum has taught me how to play the piano **since** my childhood.
4. How many times **have you gone** trekking in the rainforest?
5. Their trip is over, but they haven't tasted any street food in Bangkok **yet**.
6. My family **have stayed** in a cruise around the Mediterranean **for** a week.
7. Mr Smith **has travelled** back and forth between the US and Viet Nam over the past decade.
8. Anna **has raised** a rescue dog from the local shelter **for** two years.
9. I **have never been** on a trip without my family **before** so I'm quite worried.
10. **Have you ever tried** skydiving or bungee jumping before?
Here are the correct forms of the verbs in brackets:
1. hasn't booked
2. do
3. have ever climbed
4. explored
5. have you gone
6. won't argue
7. injured, was attending
8. has helped, arrived
9. is, am packing
10. usually visits, has never gone
11. Have you ever been, haven't been
12. has Mrs Grey taught, started
13. had, has been
1. has lived
2. moved
3. feels
4. hasn't been
5. has been
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