As nobody here knows what is wrong with the machine, we send for an engineer to handle the problem．
#63675
A
should
B
must
C
can
D
would
推荐题目
It was a fine day yesterday. I ________ have taken my raincoat with me.
#62872
A
couldn’t
B
needn’t
C
shouldn’t
D
mustn’t
You drink wine before driving, or the police will take your license away.
#77356
A
don’t have to
B
needn’t
C
mustn’t
D
may not
I _____thank you too much for all your help to my son while we were away from home.
#63300
A
won’t
B
can’t
C
can
D
will
You _____ read a book in the sun—it'll do harm to your eyes．
#63386
A
couldn't
B
wouldn't
C
needn't
D
mustn't