Professor Smith, along with his assistants,______ on the project day and night to meet the deadline.
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A
work
B
working
C
is working
D
are working
推荐题目
 More than one        the people heart and soul.
#85557
A
official has served
B
officials have served
C
official has served for
D
officials have served for
My room ________very big, but I like it very much.
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A
is
B
isn’t
C
are
D
aren’t
 _____ New York _______ London are two of the largest cities in the world.
#86151
A
Either; or  
B
Both; and
C
Neither; nor
D
Not only; but also