单项选择题

I______my wallet when I was shopping in the store.

A．must have dropped
B．should have dropped
C．could drop
D．ought to have dropped
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单项选择题
______, he felt tired out after the long journey for eight hours.
A．Strong as he is
B．The stronger he is
C．Strong man that he is
D．For he is strong
单项选择题
The results of the survey are interesting and they______more questions than they can answer.
A．bring abotit
B．prohibit
C．project
D．benefit from
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