单项选择题

It is high time you______your membership dues．

A．paid
B．pay
C．will pay
D．to pay
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单项选择题
I missed the morning train because I slept______．
A．over
B．of
C．in
D．through
单项选择题
______aloud is a very useful way to learn English．
A．Read
B．Reads
C．Reading
D．Being reaci
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