单项选择题

I’m afraid your son has been______in an accident.

A．fallen
B．involved
C．succeeded
D．dropped
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单项选择题
Because they usually receive the same score on examinations, there is disagreement as to ______is the better student.
A．who
B．which
C．whom
D．whose
单项选择题
She was undecided about ______his offer.
A．whether should she accept
B．if should she accept
C．whether she should accept
D．what she should accept
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