問題詳情
26. Passengers must board the plane 15 minutes before _____ scheduled time for departure.
(A) they
(B) them
(C) their
(D) themselves
參考答案
答案：C
難度：簡單0.765
書單：沒有書單，新增
用户評論
【daviddoff14】評論
before : 連接詞，連接二個前後發生的事件。事件A + before + 事件B= 事件A 和 B 先後發生，但是A比B先發生Ex : I saw her a few days before she left. = Before she left, I saw her a few days.