The lesson drawn from the coal mine accidents is that safety measures are so important that we _____ take them too seriously.
#87972
A
can’t
B
should
C
mustn’t
D
shall
推荐题目
  We ______ such great success without your efforts. Thanks a lot.
#87998
A
shouldn’t have accomplished
B
couldn’t have accomplished
C
were unable to accomplished
D
mustn’t have accomplished
I insisted _____ to see a doctor, but he insisted nothing ____ wrong with him.
#87394
A
on him to go; should be
B
he went; be
C
he go; was
D
he should go; is
--Don't be so disappointed.I’m sure that you can do better in the next exam. --Yes, but I ____ this time.
#89035
A
should be more careful
B
could be more careful
C
should have been more careful
D
must have been more carefully