He seems too tired today, and I wonder _________ he got a good sleep last night. A. whenB. thatC. if...
2022-11-23 05:19:25 187次 2013-2014学年北京市东城区普通校高三3月联考英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
He seems too tired today, and I wonder _________ he got a good sleep last night.
A. whenB. thatC. ifD. where
本题链接：
