(2013·江西南昌一模)Why ________ it get colder when we climb up a mountain? We are getting nearer to the sun!
#86580
A
ought to
B
would
C
should
D
must
推荐题目
I was caught in a traffic jam for over an hour, otherwise I ________ you waiting for such a long time.
#86683
A
will not keep
B
have not kept
C
had not kept
D
would not have kept
You _____ practise the drums while the baby is sleeping. 
#89558
A
needn’t
B
mightn’t
C
mustn’t
D
won’t
Five minutes earlier, and we______the last bus.
#86702
A
had caught
B
should have caught
C
could have caught
D
caught