问题
选择题
They communicate _____ each other _____ e-mail. [ ]
A. with, by
B. by; by
C. with; with
D. by; with
答案
答案:A
They communicate _____ each other _____ e-mail. [ ]
A. with, by
B. by; by
C. with; with
D. by; with
答案:A