题目内容

.Mr. Black has been teaching English in a middle school _____ he came to China.
A．for ever B．ever sinceC．ever beforeD．long before
B

试题分析：考查固定词组：A. for ever曾经，B. ever since自从，C. ever before以前，D. long before很久以前，句意：自从布莱克先生到中国来一直在中学教英语。和ever since+从句，连用的主语是现在完成时，选B。
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下面短文中有8处语言错误。请在有错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏词符号（∧），并在其下面写上该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写上修改后的词。
注意： 1. 每处错误及其修改均仅限一词；
2. 只允许修改8处，多者(从9处起) 不计分。
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A．other thanB．any otherC．rather thanD．better than
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G. They discovered how to add to the caves by building structures of wood and stone.
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