what提问时谓语用单数还是复数?对The students has cleaned the classroonm.提问,是What has been done by the students?还是What have been cleaned by the students?

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what提问时谓语用单数还是复数?对The students has cleaned the classroonm.提问,是What has been done by the students?还是What have been cleaned by the students?
what提问时谓语用单数还是复数?
对The students has cleaned the classroonm.提问,是What has been done by the students?还是What have been cleaned by the students?

what提问时谓语用单数还是复数?对The students has cleaned the classroonm.提问,是What has been done by the students?还是What have been cleaned by the students?
The students have cleaned the classroonm.提问,用What has been done by the students?

has 单数

这要求你看清句子的句型! 一般 one of+复数名词,如果前面的短语作为主语,如果one of+复数名词前有only修饰,谓语动词就用单数。