In those days, we had no phones, so we have to keep in touch _____ writing often.
#27619
A
with
B
of
C
on
D
by
推荐题目
My payment rose_____10% in April_____ the same month last year.
#29077
A
in; compared to
B
by; compared with
C
in; compared with
D
by; compared to
 I left for the office earlier than usual this morning ______ traffic jam.
#29008
A
in line with
B
for the sake of
C
in case of
D
at the risk of