He paid for a seat, when he ______ have entered free. 
#90561
A
could
B
would
C
must
D
need
推荐题目
Helen _______ it if she doesn’t want to. 
#87742
A
doesn’t need do
B
need not to do
C
needs not to do
D
need not do
You look very tired. You ____ late last night.
#87853
A
needn’t sit up
B
didn’t need to sit up
C
shouldn’t sit up
D
needn’t have sat up
—What happened to the young trees we planted?—The trees       well, but I didn't water them.
#87410
A
might grow
B
needn't have grown
C
would grow
D
would have grown
 If you ________ home without a word, your parents wouldn't be so worried now.
#86490
A
didn't leave
B
couldn't have left
C
hadn't left
D
shouldn't leave