The manager is talking with his secretary the telephone. They usually keep in touch tele

发布时间：2020-08-17 11:52:13

The manager is talking with his secretary      the telephone. They usually keep in touch      telephone.
A. by ;on
B. through; by
C. on; on
D. by ;with

网友回答

A. by ;on
(答案→)B. through; by
C. on; on
D. by ;with
解析：考查介词的用法。by当“通过”讲时，其后不加冠词；through当“通过”讲时，其后加冠词。
以上问题属网友观点，不代表本站立场，仅供参考！