We keep in touch ____ writing often. 
#28387
A
with
B
of
C
on
D
by
推荐题目
He is _______his job.
#27533
A
in danger to lose
B
dangerous of losing
C
in danger of losing
D
dangerous to lose
 People who are ______ modern city life may think it is rather dull to live in the countryside.
#25502
A
in honor of
B
in charge of
C
in favor of
D
in control of
It’s not a good idea to spend your income________.
#26842
A
in general
B
in defence
C
in advance
D
in particular