推 czr:原PO正解 04/07 12:29
____ 8. You should have done something in that case, but you ___.
(A) don't (B) hadn't (C) didn't (D) will not
A:(C) 請問為什麼不能選(B)?
是因為....
If 事情 "had" happened, you should have done something.
But you "didn't". 嗎???
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