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選擇題
There is no reason why you shouldn‘t tell them beforehand that you are leaving.
A.in advance
B.ahead
C.before long
D.early
正確答案:A
答案解析:beforehand:事先,預(yù)先。in advance:提前,預(yù)先。ahead:向前,在前。before long:不久以后。early:在初期。