问题
选择题
We should encourage everyone ______ contributions ______ our environment. [ ]
A. to make; protecting
B. to make; to protect
C. making; to protect
D. making; protecting
答案
A
We should encourage everyone ______ contributions ______ our environment. [ ]
A. to make; protecting
B. to make; to protect
C. making; to protect
D. making; protecting
A