单项选择题

He ________ have been nervous because he didn't go straight in.

A．ought to
B．must
C．should
D．had to
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单项选择题
When questioned by the interviewer, my mind went ________, and I could hardly remember my own date of birth.
A．blank
B．dim
C．faint
D．vain
单项选择题
Although the town had been attacked by tile storm several times, ________ was done.
A．a few damages
B．few damages
C．little damage
D．a little damage
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