—Why didn"t you answer the phone last night?—I ___ when you called. [ ]A. ha

题型：同步题难度：来源：

—Why didn"t you answer the phone last night?
—I ___ when you called. [     ]
A. had to slept
B. must have been sleeping
C. have to be sleeping
D. must have slept

答案

举一反三

—Shall we go skating or stay at home?
—Which ___ do yourself? [     ]
A. do you rather
B. would you rather
C. will you rather
D. should you rather

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We can"t blame John for the mistake. He wasn"t here when we decided what to do, so he ___ about the
plan.[     ]
A. wasn"t know
B. was known
C. can"t be known
D. couldn"t have known

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We knocked at the door so that we ___be allowed to stay for the night. [     ]
A. must
B. may
C. might
D. can

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— He hasn"t finished the work up to now.
—Well, he____. [     ]
A. ought have
B. should have
C. ought to
D. should

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—When can I come for the photos? I need them tomorrow afternoon.
—They _____ be ready by 12:00. [     ]
A. can
B. should
C. might
D. need

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