推 ventress:過去完成式不能單獨存在 04/29 21:39
→ MOSMOSMOSMOS:可是兩個選項都是過去完成式? 04/29 21:47
→ priv:這題應該是考return後面不要加back 04/29 21:55
I asked Helen about Bill's disappearance,but she didn't know ____.
A.why he had gone away
B.why he hadn't returned back
答案是A 請問B錯在哪裡?
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