I lost heart in English learning but my teacher often said to me “Keep on working har

问题补充：

, I lost heart in English learning, but my teacher often said to me, “Keep on working hard and you’ll 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

答案：

A. At a time, in time

B. At a time, on time

(答案→)C. At one time, in time

D. At one time, on time

解析：可联系答.案.网客服索取。