单项选择题

Mary spent five dollars ______ the present.

A．
[A] in

B．
[B] on

C．
[C] on buying

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单项选择题
Both English and Chinese ______ at the meeting yesterday.
A．
[A] used

B．
[B] are used

C．
[C] were used
单项选择题
Don't read ______ the sun.
A．
[A] in

B．
[B] under

C．
[C] below
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