My father and my mother have been married for 30 years, and never once ______ with each other.
#99794
A
they have quarrelled
B
did they quarrel
C
had they quarrelled
D
have they quarrelled
推荐题目
(2013·安徽合肥二模)—The cars give off a great deal of waste gas in the streets.—Yes. But I'm sure something will be done to ________ air pollution.
#99560
A
reduce
B
remove
C
collect
D
warn
—Guess what! We’ll have a chance to visit our sister school in Denmark this summer!—How nice! You ________ a different culture then.
#99306
A
will have experienced
B
have experienced
C
have been experiencing
D
will be experiencing
The Food and Drug Administration that anyone who too much the drug suffer side effects.
#103616
A
warned; took; will
B
has warned ;takes; may
C
warns; took; must
D
has warned; will take; need
If David his legs in the last training, he would join in the coming World Cup, which he has been longing to compete in.
#103753
A
didn’t hurt
B
hadn’t been hurt
C
wasn’t hurt
D
hadn’t hurt
–A boy was killed by the tiger in the zoo.–He was believed into the cage while feeding the tiger without permission.
#102548
A
to fall
B
to be falling
C
to have fallen
D
having fallen