问题
, I lost heart in English learning, but my teacher often said to me, “Keep on studying hard , and you’ll succeed.”
A:At one time; in time
B:At one time; on time
C:At a time; in time
D:At a time; on time
B:At one time; on time
C:At a time; in time
D:At a time; on time
正确答案是：
同类题型
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