John always tries to _____ people who are useful to him professionally.
#81766
A
develop
B
provoke
C
correspond
D
cultivate
推荐题目
Great changes _______ in our hometown since 1980
#65794
A
took place
B
have happened
C
has been taken place
D
have taken place
I ______ an old letter while I was searching my drawer.
#66344
A
came up
B
came across
C
came on
D
came about
 He worked hard to      some money for his retirement. 
#75117
A
set aside
B
set out
C
set off
D
set about