问题 选择题

Daniel is one of those students who _______ always willing to help others .

A.is

B.are

C.was

D.were

答案

答案:B

B 考查定语从句。先行词为those students是复数形式,故定语从句的谓语用复数,排除A、C。主句是一般现在时,故排除D。

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单项选择题