单项选择题

-How did you pay，the workers
-As a rule，they were paid by ______．

[A] the hour
[B] an hour
[C] hour
[D] hours
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问答题
The accident is reported to have occurred ______the first Sunday in February.
单项选择题
He got two books，one is a textbook，______is a novel．
[A] the other
[B] another
[C] other one
[D] another one
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