问题
选择题
—I think everyone should make a contribution to ______ the environment.
—I agree with you. [ ]
A. protect
B. protecting
C. protection
答案
答案：B
搜题请搜索小程序“爱下问搜题”
—I think everyone should make a contribution to ______ the environment.
—I agree with you. [ ]
A. protect
B. protecting
C. protection
答案：B
满足