問題詳情

19. ______ is important for everyone _________masks when we are in the hospital. Protect ourselves and others.
(A) It; wears
(B) It; to wear
(C) These; to wear
(D) These; wears

參考答案

答案:B
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用户評論

Jay】評論

句首應接虛主詞It所以前面是 It is........