推 vvbird:沒有附想法, 警告一次 06/27 20:49
麻煩善心大大幫忙解答QQ
1.It was not until people lost their health [that] they know its importance.
為什麼句中的that以did替換是錯的呢?
2.Sorry to keep you waiting.和 Sorry for keep you waiting.似乎都是對的
為什麼後面那句接在for後的keep不需要變成keeping呢?
原諒我能力不足>_<
謝謝!
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