问题

I hout to be calm.— He________quite enough preparation forit.

A:should do
B:must do
C:should have done
D:must have done

正确答案是：

同类题型

Could you tell me with this broken robot

One’s life has value ________ one brings value to the life of others.(2012·江苏，30)

Mrs. Li works hard to buy a large house ______________.

nited Nations says hunger kills more people every year than AIDS, malaria and tuberculosis ________.

you read, you understand.