问题

I’m not sure whether be has finished writing the book, but he________ it last month
A:worked at
B:was working on
C:worked on
D:was working at
B:was working on
C:worked on
D:was working at
正确答案是:
同类题型
Most people still enjoy ____ the plays written (写) by Shakespeare.
The house I grew up _____ has been taken down and replaced by an office building. [ ]
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I to be quite afraid to live in that city, but now I have to the life there.[ ]