题目内容
It was about 5 o’clock in the afternoon _______ they had their supper.
| A.that | B.what | C.before | D.when |
D
考查状语从句。When连接时间状语从句,句意:当他们吃晚饭时大约是下午五点钟。
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| A.that | B.what | C.before | D.when |