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
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On the top of the books ________the stamp album my uncle gave me as a birthday present.
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A
has
B
is
C
are
D
have
________ as he was, he looked quite calm in that difficult situation.
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A
A child
B
The child
C
Children
D
Child