—I think it’s very dangerous to drive six hours without a rest.—I agree. Six hours           really a very long time.
#59315
A
has
B
is
C
were
D
am
推荐题目
It took the firemen six hours to________ the fire.
#60665
A
put up
B
put down
C
put on
D
put out
He ________  go out with his parents, but now he ________ staying at home alone.
#58701
A
used to; is used to
B
is used to; used to
C
use to;is used to
D
used to; used to