单项选择题

He fell asleep immediately last night. He（）very tired.

A．must be
B．must have been
C．can be
D．could have been

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单项选择题

（）second thoughts, I have decided to give up my visit to Shanghai.

A．In
B．By
C．On
D．With

单项选择题

He is（）of steeling money from the old woman.

A．accused
B．emerged
C．charged
D．expected

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