A、 D正确
从句后要用陈述语序
B、C后都不是
D 表示的是过去完成时 (had+动词过去分词)
I couldn't understand( ) the baby alone.
I couldn't understand( ) the baby alone.
A.why she left B.why did she leave C.why had she left
D.why she had left
A.why she left B.why did she leave C.why had she left
D.why she had left
英语人气:504 ℃时间:2020-03-25 22:36:51
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