It______ a calm head to find the best solution to such a difficult problem within a short time.
#82456
A
costs
B
takes
C
spends
D
needs
推荐题目
There was enough evidence to prove that the explosion in Robinson’s house _______ the leak of natural gas.
#66943
A
resulted in
B
resulted from
C
led to
D
contributed to
The scientists are beating their brains, trying to ______ a solution to the problem.
#64469
A
look up to
B
live up to
C
come up with
D
keep up with
Experts say walking is one of the best ways for a person to _____ healthy.
#81811
A
preserve
B
stay
C
maintain
D
reserve
9. 一I must apologize_____ you know ahead of time．一That’s all right．
#84477
A
for letting not
B
for not letting
C
to let not
D
not to let