It will be about 100 days the College Enhance Examination comes.A. whenB. asC. beforeD. si

问题补充：

It will be about 100 days the College Enhance Examination comes.

A. when

B. as

C. before

D. since

答案：

A. when

B. as

(答案→)C. before

D. since

解析：考查连词。本题考查it will … before …句型，表示“还有 …… 就 ……”。句意：还有大约100天就要高考了。故C正确。