問題詳情
18. Sometimes, people are not conscious of the importance of health. Only when they lose health ______ its importance.
(A) they know
(B) that they know
(C) do they know
(D) they do know
參考答案
答案：C
難度：非常困難0
統計：A(0),B(1),C(0),D(0),E(0)
用户評論
【用戶】Miss Taro
【年級】大二下
【評論內容】Only 後面為副詞子句或介系詞片語，需使用倒裝句