---Look! The light is still on. Is Mr Wu working in his office？

---No, it _____ be Mr Wu. He has gone to Nanjing for a meeting.

A. needn’t B. mustn’t

C. can’t D. wouldn’t

______ you keep trying till the end, you will never know how strong you are!

A. Although B. If

C. Unless D. Because

______ the students were when they heard the rock music!

A. How excited B. How exciting

C. What excited D. What exciting

I stopped the car ____ a short break as I was feeling tired.

A. takeB. taking C. taken D. to take

While Helen _____ along the river after supper, she ____ a wallet lying on the roadside.

A. was walking; was finding B. walked; found

B. walked; was finding D. was walking; found

It is said that the gravity on Mars is only about __________ of the gravity on earth．

A. three-eighthsB. third-eighth

C. three-eighthD. third-eighth

My American friend Sam is interested in Yangzhou very much. He wonders _______.

A. that Yangzhou was very rich in the ancient times

B. who built Ge Garden and He Garden

C. when was the Wenchang Pavilion built

D. what is the City Flower of Yangzhou

Progress ____so far very good and we are sure that the work will be finished on time.

A. was B. had been

C. has been D. will be

---Hannah loves his new dog, doesn’t he ?

--- Yes, he ____ it out for a walk every day.

A. takes B. took

C. is taking D. has taken

The ________ on his face told me that he was angry.

A. expression B．sight

C．appearanceD．scene