While studying fix your mind on what is really important or you will remembering nothin

问题补充：

While studying, fix your mind on what is really important, or you will remembering nothing.

A. end up

B. take up

C. lead to

D. stick to

答案：

(答案→)A. end up

B. take up

C. lead to

D. stick to

解析：考察动词短语辨析。A以…结束；B占据，从事于，开始做；C导致，通向；D坚持，黏住；句义：当学习的时候，要把你的注意力集中在真正重要的内容上，否则你会什么都记不住。根据句义说明end up符合语义。