单项选择题

It's necessary that not only ______ to see a doctor but also stay at home for a good sleep.

A．Bob should go
B．did Bob go
C．Bob's going
D．should Bob go
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单项选择题
It ______ Jim and Tom who did it.
A．was
B．were
C．had been
D．are
单项选择题
He insisted that we all ______ in his office at one o'clock.
A．be
B．to be
C．would be
D．shall be
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