问题
选择题
—Are they working?
—No, they are talking ______ the phone. [ ]
A. in
B. at
C. on
D. for
答案
C
搜题请搜索小程序“爱下问搜题”
—Are they working?
—No, they are talking ______ the phone. [ ]
A. in
B. at
C. on
D. for
C