It is (necessary) that she (comes) here twice a week (to help) (do) the housewor

游客2025-03-17 9

问题 It is (necessary) that she (comes) here twice a week (to help) (do) the housework.

选项 A、necessary
B、comes
C、to help
D、do

答案 B

解析应改为come。虚拟语气，用动词原形。

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