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英语单选1.It's nearly seven o'clock.Jack ___ be back home at thi

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英语单选
1.It's nearly seven o'clock.Jack ___ be back home at this moment.
A.must B.need C.could D.can
2.It ___ five years since he has left for Beijing.
A.was B.have been C.is D.is going to be
3.He was sure that he ___ his wallet in the office.
A.left B.would leave C.had left D.has left
4.You ___ your turn so you'll have to wait.
A.will miss B.have missed C.are missing D.had missed
5.Mother said to Mike,"I hope you ___ what I ___ you to buy."
A.didn't forgot;told B.don't forget;tell
C.won't forget;have told D.haven't forgotten;will tell
a现在几点,他一定是到家了.肯定猜测must.
c 后面现在完成时用IS,过去完成时用WAS
c前面过去时,后面过去完成时
b 你已经错过了一轮,所以你要接着等.现在完成时
c 直接引语,正常时态.