Jack a great talker. It’s high time that he __ something instead of just talking.
#86567
A
will do
B
has done
C
do
D
did
推荐题目
Tony ____ the invitation, otherwise he would have attended your birthday party. 
#86508
A
couldn’t have received
B
mustn’t have received
C
needn’t have received
D
shouldn’t have received
I____ asleep because it took me a long time to realize that the telephone was ringing.
#88031
A
could have fallen
B
should have fallen
C
must have fallen
D
mustn’t have fallen