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表示帶有疑問,if此處同whether
I don't know___they have passed
I don't know___they have passed
I don't know___ they have passed the exam
1.what
2.if
3.when
4.where
I don't know___ they have passed the exam
1.what
2.if
3.when
4.where
英語人氣：820 ℃時間：2020-01-26 06:01:50
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