One of the requirements for the experiment is that the material _____ to its burning temperature．
#86983
A
is heated
B
will be heated
C
be heated
D
would be heated
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一I still cannot figure out why he missed his flight．一He an accident on the way to the airport．
#88060
A
could have had
B
should have had
C
would haye had
D
must have had
I should not have laughed if I ______ you were serious.
#86869
A
thought
B
would think
C
had thought
D
have thought
It is ordered that a new bridge ______ over the wide river.
#88197
A
should be built
B
would built
C
will be built
D
built
The captain urged that the mission ______ before dark.
#88032
A
must be finished
B
be finished
C
ought to be finished
D
was finished