问题
_ , I lost heart in Frenchlearning，but myfather often said to me, “Keep on workinghard；you will succeed ______ ”．
A:At a time；in time
B:At a time：on time
C:At one time；in time
D:At one time；on time
B:At a time：on time
C:At one time；in time
D:At one time；on time
正确答案是：
同类题型
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