____ bikes are red. ____ are blue.
| A．We; They | B．Our; Their |
| C．Our; Theirs | D．We; Their |
—Have you seen my watch anywhere, Lucy?
—Is it the one your uncle bought for you in Hong Kong?
| A．who | B．what | C．that | D．when |
Lots of people like to take a walk on Nanjing City Wall since it .
| A．repaired | B．was repaired |
| C．has repaired | D．is repaired |
—Amy, I think you have to return the book to the library today.
—Why? I it for only one week.
| A．borrowed | B．have borrowed |
| C．kept | D．have kept |
—The air in Nanjing was much better during the Spring Festival because people were not allowed to let off firecrackers.
—I agree. Everyone should do what he can the environment.
| A．protect | B．protecting |
| C．protects | D．to protect |
weather it has been these days! One day is quite rainy, another day is quite windy.
| A．What good | B．What a good |
| C．What bad | D．What a bad |