問題詳情

1.1 Studies show that ______ are easily passed from one person to another by failure towash hands frequently.
(A) Infect
(B) infections
(C) infectious
(D) infecting

參考答案

答案：B
難度：適中0.6
書單：沒有書單，新增

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Be動詞前面+名詞 inf.....看完...