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单项选择题
A.to meet you
B.having met you
C.be meeting you
D.to have met you
单项选择题
A.has to start
B.must to start
C.have to start
D.can start
单项选择题
A.have to
B.don‘t have to
C.must
D.mustn‘t
单项选择题
A.must
B.mustn‘t
C.have to
D.don‘t have to
单项选择题
A.that he saw
B.had he seen
C.did he see
D.that he had seen
单项选择题
A.people can do what
B.can people do what
C.people can not do what
D.can‘t people do what
单项选择题
A.it took
B.it takes
C.it is being taken
D.it has been taken