单项选择题

There are five pairs______, but I’mata loss which to buy.

A．to be chosen
B．to choose from
C．to choose
D．for choosing
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单项选择题
So badly______in the accident that he was sent to a hospital.
A．did he hurt
B．he was hurt
C．was he hurt
D．be did hurt
单项选择题
The boy pretended______his homework, when his parents came back home.
A．to do
B．do
C．doing
D．to be doing
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