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- 11Had electronic computers not been invented, many problems on space flight ________.
A.could not have been solved
B.could not be solved
C.can not be solved
D.could not have solved
开始考试练习点击查看答案 - 12I wish I ________ more attention to my study when I was young.
A.gave
B.would give
C.have given
D.had given
开始考试练习点击查看答案 - 13Who ________ you ask for help if you were robbed?
A.will
B.would
C.shall
D.could
开始考试练习点击查看答案 - 14The rule requires that everyone ______ his bike in the corridor.
A.not parks
B.not parking
C.not park
D.not to park
开始考试练习点击查看答案 - 15I ________ to the party that night but I met an unexpected visitor.
A.should go
B.should have gone
C.went
D.used to go
开始考试练习点击查看答案 - 16Mary ______ the job he offered to her, but she didn't.
A.can't take
B.ought to have taken
C.should take
D.must have taken
开始考试练习点击查看答案 - 17We ________ last night, but we went to appreciate the flowerbeds and streetlights in Tiananmen Square instead.
A.might study
B.could study
C.should have studied
D.must have studied
开始考试练习点击查看答案 - 18I suggest that he ________hospital as soon as possible.
A.send to
B.should be sent to
C.will be sent to
D.must be sent to
开始考试练习点击查看答案 - 19It is about time that you ________.
A.went
B.go
C.will go
D.would go
开始考试练习点击查看答案 - 20The police recommended parents ________their children under 12 to ride to school for safety.
A.not allow
B.do not allow
C.mustn't allow
D.couldn'tallow
开始考试练习点击查看答案
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