问题补充:
Mr. White is my English teacher. He in this school for about 5 years.
A. has worked
B. will work
C. is working
D. works
答案:
(答案→)A. has worked
B. will work
C. is working
D. works
解析:句意:白先生是我们的英语老师。他在这所学校已经工作5年了。句中有for about 5 years. 一段时间的状语,故用现在完成时。