Some people feel easy and comfortable to be served by others but when they are asked to serve others ______, they are unwilling or even hate to do so. 
#27508
A
in turn
B
in their turns
C
in their turn
D
by their turn
推荐题目
____ their house in London, they also have a house in Spain.
#27265
A
Except
B
Except for
C
Beside
D
Apart from
Customs vary greatly _______ country to country.
#26512
A
from
B
at
C
for
D
with
—Why do you suggest we buy a new machine?—Because the old one has been damaged ______.
#25644
A
beyond reach
B
beyond repair
C
beyond imagination
D
beyond description