Before the tourists set off , they spent much time setting a limit _____ the expenses of the trip.
#26249
A
in
B
for
C
to
D
about
推荐题目
 Even though the Smiths have moved to a faraway place, we still see them ___. 
#27513
A
from time to time
B
at a time
C
at the same time
D
all the time