This project considered thoroughly, and I’m sure it finished on time.
A. must be; may be
B. should be; can be
C. may be; must be
D. can be; should
网友回答
A. must be; may be
(答案→)B. should be; can be
C. may be; must be
D. can be; should
解析：可联系答.案.网客服索取。