In ancient times, dogs were mainly ______helping people hunt( 打猎) .Now they are more useful-they can help the blinds, search for the bad eggs,...
#77872
A
bad for
B
used to
C
used for
D
good at
推荐题目
The ground isn't wet. It ________ have rained last night.
#62681
A
mustn’t
B
shouldn’t
C
wouldn’t
D
can’t
Harry is feeling uncomfortable. He _____ too much at the party last night.
#62858
A
could drink
B
should drink
C
would have drunk
D
must have drunk
 Your teacher ________ very angry at that moment because you talked back to her like that.
#62318
A
should have been
B
must have been
C
must be
D
might have been