In addition to the farming they ______ since the 1990s, the Smiths have started a small business.
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A
have done
B
had been done
C
were doing
D
have been doing
推荐题目
—What did you do last night?—I______________my homework but nothing else.
#104051
A
did
B
was doing
C
has done
D
had done
With the fast development of computer and Internet technologies, traditional printed books ______ by the growing popularity of online reading of e-books.
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A
are challenged
B
have challenged
C
are being challenged
D
have been challenged
He seemed as if he ___ his homework when his mother came in.
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A
did
B
is to be doing
C
were doing
D
be doing
In order to stop poverty, the World Bank has ______ its focus to providing technical assistance and long-term loans to developing countries.
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A
fixed
B
exchanged
C
transferred
D
switched
--What kind of job have you ever done before?--Oh, I _________ for an engineering company for three years,
#100127
A
work
B
have worked
C
worked
D
had worked