The bus ____ at six, but it arrived an hour later.
#63180
A
should arrive
B
had arrived
C
should have arrived
D
must arrive
推荐题目
 I felt surprised that anyone of his intelligence   ________  such an easy test.
#62347
A
might have failed
B
could have failed
C
should have failed
D
must have failed
Could you please_____ the piano so loudly? Your brother is having a rest now.
#74747
A
not to play
B
not play
C
don’t play
D
to not play
I _____ have watched that movie --- it’ll give me horrible dreams.
#63539
A
couldn’t
B
needn’t
C
shouldn’t
D
mustn’t