单项选择题

He didn't look well, for he ______ for sixteen hours.

A．had worked
B．would have worked
C．was working
D．had been working
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单项选择题
Kenny speaks to me ______ he were my boss.
A．even if
B．if
C．as if
D．although
单项选择题
If he had followed the doctor's instruction and ______ in bed to rest, he ______ recovered already.
A．had laid; would
B．had been lain; would
C．had lain; would have
D．was laid; would have been
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