I ________ use a clock to wake me up because at six o'clock each morning the train comes by my house.(2012·新课标全国)
#11455
A
couldn't
B
mustn't
C
shouldn't
D
needn't
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Up to now, large quantities of food to Africa to save the starving people.
#14187
A
has been sent
B
have been sent
C
are sent
D
is sent
Security was such a major concern at the conference that no journalists could approach the meeting zone without ________ the special pass.
#13624
A
commanding
B
issuing
C
producing
D
involving
If he ________ my advice, he wouldn't have lost his job.
#11439
A
followed
B
should follow
C
had followed
D
would follow