题目

The number of teachers in our college __________greatly increased last term.A number of teachers in this school __________from the countryside. A.was; is                                           B.was; are C.were; are                                        D.were; is 答案：B 解析: “the number of+名词”作主语，谓语动词常用单数形式。“a number of+名词”作主语，谓语动词常用复数形式。

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