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
The little boy felt grateful ________ the coach for his letting him ________ the game. 
#27220
A
for / join in
B
to / to join in
C
with / join
D
to / join in
 The tiger, once a __    __ animal to humans, is now ____ of disappearing on the earth.
#25994
A
dangerous, danger
B
dangerous, in danger
C
in danger, in danger
D
danger, in danger
Those overseas students volunteer 10 hours each week in Paris ________ free food and accommodation.
#25239
A
in search of
B
in contact with
C
in case of
D
in exchange for