Ever since Daming graduated from the university he in the present company for 15 years

问题补充：

Ever since Daming graduated from the university, he in the present company for 15 years and he is now chief engineer of the company.

A. worked

B. has been working

C. is working

D. works

答案：

A. worked

(答案→)B. has been working

C. is working

D. works

解析：

试题分析:考查考查动词时态。ever since是现在完成时 或许现在完成进行时的标志词，表示从过去到现在一直存在的状态，所以答案选B。句意：自从大明大学毕业后，他在现在的公司工作了了，并且现在已经是公司的总工程师了。