問題詳情
19.Wearing a mouth mask is required to prevent people __________ being infected by H1N1.
(A) from
(B) by
(C) to
(D) of
參考答案
答案：A
難度：簡單0.8125
統計：A(39),B(2),C(5),D(0),E(0)
用户評論
【南信】評論
Wearing a mouth mask is required to prevent people from being infected by H1N1. prevent 人 from Ving : 阻止某人從事...