----I’ve got to go now.
---Must you? I you could stay for dinner with us.
A.think |
B.thought |
C.have thought |
D.am thinking |
Without gravity, we _____ walk on the ground as freely as we do now.
A.couldn’t | B.mustn’t | C.shan’t | D.needn’t |
Zhang Heng, one of _____ best-known Chinese astronomers, showed a strong interest in _____ astronomy as a child.
A.the; the | B.the; 不填 | C.不填; the | D.不填; 不填 |
— Could I have another cup of coffee, Daddy?
—_____ It will be hard for you to go to sleep tonight if you do.
A.Better not. | B.Why not? | C.What for? | D.As you wish. |
With a report _____ about the accident, the policeman has to find some witnesses for help.
A.write | B.writing | C.written | D.to write |
-The terrible accident might not have happened had the driver been more careful.
--But he _____.
A.wasn’t | B.didn’t | C.hadn’t | D.doesn’t |