问题补充:
Ever since my brother 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:考查时态。根据句中时间状语ever since自从……以来,故用现在完成进行时,表示动作从过去就开始,一直持续到现在,并有可能继续持续下去。句意:自从我哥哥大学毕业以来,他在现在的公司工作了,现在时公司的总工程师。故B正确。