问题
选择题
He seems too tired today, and I wonder__________ he got a good sleep last night.
A．when
B．that
C．if
D．where
答案
C
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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He seems too tired today, and I wonder__________ he got a good sleep last night.
A．when
B．that
C．if
D．where
C
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。