问题
选择题
In the future people can read books only _____ computers, not _____ paper. [ ]
A. on; in
B. on; on
C. in; on
D. in; in
答案
答案：B
搜题请搜索小程序“爱下问搜题”
In the future people can read books only _____ computers, not _____ paper. [ ]
A. on; in
B. on; on
C. in; on
D. in; in
答案：B