He worked hard to      some money for his retirement. 
#75117
A
set aside
B
set out
C
set off
D
set about
推荐题目
Afraid __________? This type of anxiety can deeply disturb people’s enjoyment of social relationships.
#64152
A
of laughing at
B
to be laughed at
C
of being laughed at
D
being laughed at
They were thirsty, so they went ______ something to drink.
#71196
A
searching for
B
searching for
C
searching
D
in their search of