He seems too tired today, and I wonder he got a good sleep last night.A. whenB. thatC. ifD

发布时间：2020-08-15 01:32:40

He seems too tired today, and I wonder      he got a good sleep last night.
A. when
B. that
C. if
D. where

网友回答

A. when
B. that
(答案→)C. if
D. where
解析：他今天看起来很累，我怀疑他昨晚是否睡好了。if引导宾语从句。故选C。
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