问题
We keep in touch_____ writing often. [ ]
A: with
B: of
C: on
D:by
B: of
C: on
D:by
正确答案是：
同类题型
There is something wrong ________ my throat.[ ]
Do come here tomorrow,we will enjoy the live performance by the “Heart-to-Heart” Art Troupe.
All the students are working hard now.—_______. Because all of them want to go to good colleges.
I will go to Beijing for a visit with my family during the winter holiday. —______.