— Who is ____ the TV show? She seems to be talented. — Mary Green, who used to be a great actress.
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A
opening
B
hosting
C
playing
D
seeing
推荐题目
8.Customers are asked to make sure that they ____ the right change before leaving the shop.  
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A
will give
B
have been given
C
have given
D
will be given
一Have you handed in your schoolwork yet?一Yes,I have.I guess it _____ now.
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A
has graded
B
is graded
C
is being graded
D
is grading
New medicines and instruments ______ every day to extend life.
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A
develop
B
are being developed
C
are developing
D
have developed