单项选择题

It was essential that all the necessary documents ______ to the president's office before the end of this month.

A．be handed in
B．must be handed in
C．should hand in
D．had been handed in
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单项选择题
It's quite similar in shape ______ yours.
A．as
B．with
C．like
D．to
单项选择题
According to the passage, we can see that using as few words as possible sometimes will ______.
A．be useless
B．help us a lot
C．cause trouble
D．waste money
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