When I am tired with math exercises, I            go out for a walk to get relaxed.
#87452
A
should
B
must
C
need
D
will
推荐题目
 He directed exposure to pigs,otherwise he_______pig flu.
#90450
A
couldn’t get
B
wouldn’t have gotten
C
couldn’t have got
D
woud get
We insisted that the girl ________ qualified for the job, but the manager insisted that she ________ the job because of her shyness as a receptionist.
#87678
A
should be; was offered
B
was not; should be offered
C
was; not be offered
D
should not be; was not offered
It was so nice of you to come to our aid. I don’t think we ______ it without you.   
#86416
A
can manage
B
could have managed
C
must have managed
D
could manage