A、 D正確
從句后要用陳述語序
B、C后都不是
D 表示的是過去完成時 （had+動詞過去分詞）
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
英語人氣：164 ℃時間：2020-03-25 22:36:51
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