题干
If there no buying and selling of animals, there no killing in nature.
A：is; will be
B：will be; will be
C：is; is
D：will be; is
答案(点此获取答案解析）
A
If there no buying and selling of animals, there no killing in nature.
A：is; will be
B：will be; will be
C：is; is
D：will be; is
