[考題] if的時態
I don't know if my brother ____last night.
A.has been there B.was there C.will be here D.is here
If當"是否"時,不是用現在簡單式嗎?
答案為什麼是b呢?
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11/21 20:10, , 1F
11/21 20:10, 1F
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11/21 20:11, , 2F
11/21 20:11, 2F