问题补充：
animals are in danger and there will be space for them if we don’t take any actions.
A. More and more, more and more
B. More and more, less and less
C. Less and less, less and less
D. Less and less, more and more
答案：
A. More and more, more and more
(答案→)B. More and more, less and less
C. Less and less, less and less
D. Less and less, more and more
解析：more可以修饰可数或不可数名词，而less 只能修饰不可数名词，再根据意思选B
