Direct speech (the original speaker's exact words):
1. "Can you manage to meet the deadline for the project?"
2. "Will you visit some natural wonders overseas this summer?"
Reported speech (the words that report what the speaker said, typically using the past tense and pronoun changes):
1. I said to Linh, "Can you manage to meet the deadline for the project?"
Becomes: I asked Linh if he could manage to meet the deadline for the project.
2. "Will you visit some natural wonders overseas this summer?" she said.
Becomes: She asked if I would visit some natural wonders overseas that summer.
In the reported speech, the words are changed from the original direct speech, and the tense is also changed.
Here are the answers to the exercise:
1. Mr. Minh, who will guide us on our Cu Chi Tunnel tour, is on his way.
2. This is the writer whose book Travel on $50 a Day is my favourite travel guide.
3. My son, who is a huge fan of Taylor Swift, is on a music tour to see her in concert.
4. Ha Giang, whose beauty and history are appealing, is a must-go in my tour list.
5. While travelling, my father often spends time talking with the locals whose stories, he says, are interesting about the land we are visiting.
Here are the completed sentences with the relative pronouns "which", "who", or "whose":
1. My family spent four days in India, whose culture is unique.
2. Organising self-guided tours helps develop personal skills, which are important for everybody.
3. Russel stayed in a hotel in Bui Vien Street, which is one of the best streets for foreign tourists.
4. After the Muay Thai Show, my sons talked to the artists whose performance they admired so much.
5. We participated in a lot of activities with the local people, who were friendly and helpful.
6. I met a woman whose husband is a famous linguist.
7. My friend's father gave us the tickets, who owns a travel agency. (Alternatively: My friend's father, who owns a travel agency, gave us the tickets.)
8. The grammar exercise was very complicated, which nobody could do. (Alternatively: Nobody could do the grammar exercise, which was very complicated.)
9. I study English in a language school, which is in the centre of the city.
10. The student, who completed the quiz the fastest, was praised by the teacher.