单项选择题

The guides ______ the tourists together at the hotel gate.

A．accumulated
B．collected
C．assembled
D．resembled
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单项选择题
We______her letter last week. We don't know what has happened to her.
A．must receive
B．must have received
C．ought to receive
D．ought to have received
单项选择题
You are quite wrong, she ______ like you.
A．can
B．has
C．should
D．does
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