Susan has to work very hard .I( )do her job,I'm sure.A.can't B.co_英语解答

Susan has to work very hard .I( )do her job,I'm sure.
A.can't
B.couldn't
这里用哪个词?why?

人气：346 ℃　时间：2019-10-19 05:20:36

解答

B:Couldn't
could 是 Conditional tense.
I couldn't do her job,I'm sure - 如果是我的话,我不一定能做好她的工作
I can't do her job,I'm sure - 她的工作我肯定做不来