Thank you for all your hard work last week.I don’t think we ______ it without you. 
#90551
A
can manage
B
could have managed
C
could managed
D
can have managed
推荐题目
Our monitor requested that ________.
#87441
A
all the class studied more carefully the problem
B
the problem was more carefully studied
C
with great care the problem could be studied
D
all the class study the problem more carefully
You________ the work better, but you didn’t put more efforts to it.
#86713
A
must have done
B
can have done
C
should have
D
could have done