If you keep on you’ll succeed .A. in time B. at one time C. at the same timeD. on time

问题补充：

If you keep on , you’ll succeed .

A. in time

B. at one time

C. at the same time

D. on time

答案：

(答案→)A. in time

B. at one time

C. at the same time

D. on time

解析：考查短语辨析。in time 及时，迟早，at one time 一度，曾经，at the same time 同时，on time 按时，句意：如果你继续，你迟早会成功的。所以选A。