填空题

The manager told us to be friendly to the visitors as if we (meet)______them before.

【参考答案】

had met
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填空题
In the past, the workers were often forced (work)______twelve or fourteen hours a day.
单项选择题
A．Yes，I am．B．No，I’m not．C．Yes，I did．D．No，I did．
A．Yes，I am．
B．No，I’m not．
C．Yes，I did．
D．No，I did．
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