B.

1.Bao and his friends visited Can Tho city last summer.

2.Yes, bao did took a lot of photos.

3.The name of the market is Cai Rang.

4.They bought a lot of fresh fruit there. 

IV.

1.Ba wishes he could have a new bike.

2.She arrives in Singapore on Monday evening.

3.How many hours do you spend watching TV a week?

4.This ecxercise must be done carefully.

B.

Last summer, me and my family visited Phu Quoc and it was a fun trip for us. We went to Phu Quoc by airplane from Ho Chi Minh city and it took us about 1 hour. The road to the hotel I stayed at was very scenic. When we came, We were impressed with the sea view and seafood here.The last day in Phu Quoc we took time to buy souvenirs and the most special thing was that we could see the coral reefs under the sea, we took a lot of pictures there.