.—What are you busy with?—The conference___________in our city next week, as you know.
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A
held
B
will be held
C
be holding
D
to be held
推荐题目
She can’t help___ the house because she’s busy making a cake.
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A
to clean
B
cleaning
C
cleaned
D
being cleaned
I still remember ______ to the Famen Temple and what I saw there. 
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A
to take
B
to be taken
C
taking
D
being taken
-- Not knowing what style of iPad to choose, _______.
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A
some advice was given to Liming
B
Liming had to consult his IT teacher
C
so Liming had to consult his IT teacher
D
Liming’s IT teacher gave him some advice