Yuan Longping, a great person in China, _____as “father of hybrid rice”
A. is regarded B. has regarded
C. is regarding D. regards
______ the work is difficult, all the workers are keeping on working .
A. But B. Although C. And D. So
Tom often makes his brother____ but yesterday he was made____ by his brother.
A. cry; to cry B. to cry; cry
C. cry; cry D. to cry; to cry
---May we go home mow ?
--- No, you____. You____ to go home until 5 o’clock.
A. mustn’t; are allowed
B. don’t have to; are supposed
C. needn’t; aren’t allowed
D. can’t; aren't supposed
He _____in Xinxiang for five years when I heard his news.
A. has lived B. had lived
C. is living D. has been lived
We all should make a contribution to ______ our environment.
A. protects B. to protect
C. protecting D. protect
