单项选择题

Jack ______ yet, otherwise he would have telephoned me.

A. mustn't have arrived
B. shouldn't have arrived
C. can't have arrived
D. need not have arrived
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单项选择题
______ tomorrow, we would surely go to have a picnic. A) If it is fine B) When it is fine C) Being fine D) Were it to be fine
______ tomorrow, we would surely go to have a picnic.
A) If it is fine B) When it is fine C) Being fine D) Were it to be fine
单项选择题
About two thirds of the population in China ______ in the countryside.
A. is still living

B. were still living
C. was still living

D. are still living
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