单项选择题

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A.He has to finish his writing.
B.He has to finish a letter.
C.He has to do the cleaning.
D.He has to finish his homework.
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单项选择题
Before liberation,the laboring people worked hard only to live a poor life.
A.解放前,劳动人民艰苦劳动,结果只能过贫苦生活。
B.解放前,劳动人民工作努力,但还是过贫苦生活。
C.解放前,穷人拼命劳动,结果生活还是困难。
D.解放前,工人们艰难挣扎只为摆脱贫困生活。
单项选择题
If we had known the basic principles,we should have controlled the process ever better.
A.如果我们认识这些基本理论,我们就能更好的控制这个程序了。
B.假如我们了解这些基本原理,我们应该早点控制这个过程。
C.如果我们见过这些基本原理,那么我们必须更早一点控制这个程序的使用。
D.如果我们早知道这些基本原理,我们就会更好的控制这个程序了。
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