问题补充:
His father in the factory since he was twenty.
A. works
B. has worked
C. will work
D. was working
答案:
A. works
(答案→)B. has worked
C. will work
D. was working
解析:根据时间状语从句从他二十岁,可知主语为现在完成时态,选B.
时间:2019-06-22 22:53:50
His father in the factory since he was twenty.
A. works
B. has worked
C. will work
D. was working
A. works
(答案→)B. has worked
C. will work
D. was working
解析:根据时间状语从句从他二十岁,可知主语为现在完成时态,选B.
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