Every knife and fork _____ carefully.A、have cleanedB、has cleanedC、have been cl

游客2023-10-07  25

问题 Every knife and fork _____ carefully.

选项 A、have cleaned
B、has cleaned
C、have been cleaned
D、has been cleaned

答案 D

解析 knife和fork一起使用,被看做一个整体,指一套刀叉,它们作主语时谓语动词用单数。又因为主谓之间是被动关系,所以用被动语态。
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