16. Yesterday, we went on a roller coaster at the _________

A. concert hall                        B. amusement centre    C. theater

17. I want to see a robotics exhibition at the _____________ .

A. stadium                              B. exhibition centre      C. concert hall

18. At a _______________ , you can see a sport event.

A. stadium                              B. exhibition centre      C. concert hall

19. Dan likes listening to classical music, so he often visits the ___________

A. stadium                              B. exhibition centre      C. concert hall

20. Mark was at the _____________ and he saw clowns and acrobats.

A. stadium                              B. circus                        C. concert hall

2.                 Tìm lỗi trong những câu sau 

1.     After I had run 10 kilometers, I drank a lot of water, but I was still thirsty. 

2.     She turned off the lights after everyone had left the room. 

3.     When we were in New York, we saw several plays. 

4.     By the time he arrived, we had already finished work. 

5.     She got a job after she had graduated from university. 

IV.Sửa lỗi sai

1.We first met when he became the manager of the bank

2.I sometimes call on my younger sister when i'm in london

3.After we had eaten , we played cards

4.Take a pack lunch with you , in case you get hungry

5.There was a power failure earlier today and the trains are all running late now

6.He behaved in such a silly way I was ashamed of him

7.We served drinks as soon as our friends arrived

8.Dad found his change between the couch cushions

9.To tracks my running speed , I use a stopwatch

10.Carter put wood in the fireplace to keep the cabin warm

11.Christina went to the grocery store

12.The carpenter hit the nail with a hammer