One of the requirements for a fire is that the material ____ to its burning temperature.
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A
is heated
B
be heated
C
would be heated
D
do heat
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The book I bought from the bookstore isn’t here. Who __________?
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A
could have taken it
B
must have taken it
C
might take it
D
should take it.
-----I thought I ______something burning  . -----Really?
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A
smelled
B
was smelling
C
could smell
D
might smell
________ stop advertising, prices would be greatly reduced.
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A
Were they to
B
Could they
C
If they
D
Would they