(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
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It’s a shame ______ able to give them any advice.  
#87215
A
not to have been
B
to have not been
C
to have been not
D
to not have been
I’d rather he ______ tomorrow afternoon.
#89155
A
will come
B
comes
C
coming
D
came
—What happened to the young trees we planted last week?—The trees _      well, but I_        them.  
#86829
A
might grow; hadn't watered
B
needn't have grown; didn't water
C
would have grown; didn't water
D
would grow; hadn't watered