Listening to loud music at rock concerts__________caused hearing toss in some teenagers.
2023-05-26
A.is
B.are
C.has
D.have
参考答案:C
B.are
C.has
D.have
参考答案:C
Listening to…是动名词短语作主语,故谓语动词用单数,根据caused可知用现在完成时的单数形式。
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