题目内容

The number of the students _ increased in recent years and a number of them __ from the countryside.

A. have; are
B. has; is
C. has; are
D. have; is

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Eachminuteandsecond _______ valuable to us.

A. is
B. are
C. being
D. to be

A knife and fork _____ on the table.

A. are
B. is
C. to be
D. be

英语句子中，谓语动词的数必须与宾语的数保持一致。

A. 对
B. 错

由and连接的两个单数名词做主语时，谓语动词就用复数形式。

A. 对
B. 错