You must be careful when ___ on the highway.
#67834
A
you driving
B
are driving
C
driving
D
you were driving
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______ you’ve got a chance, you might as well make full use of it.
#67744
A
Now that
B
After
C
Although
D
As soon as
Occasions are quite rare ________ I have time to spend a day with my kids.
#67000
A
who
B
which
C
why
D
when
There is hardly an environment on earth _____ some species of animals or other have not adapted successfully.
#74134
A
in which
B
on which
C
to which
D
for which
（2014重庆一中高三下第三次月考）14. An EU official stressed that effective measures could be taken, the future for Europe was indeed dark.
#66657
A
until
B
unless
C
since
D
while