单项选择题

--Are we supposed to take off our shoes before we enter
--No, you ().

A．shouldn't
B．needn't
C．mustn't
D．can't

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单项选择题

How nice to see you again! You should have told me before you ().

A．are coming
B．have come
C．will come
D．were coming

单项选择题

I didn't expect you to arrive so soon. How long did the journey ()

A．go
B．take
C．make
D．cover

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