问题:
_____ways to be more gentle with the earth, or we’ll be punished.
[ ]
A. Found
B. Finding
C. Find
D. To find
_____ways to be more gentle with the earth, or we’ll be punished.
B. Finding
C. Find
D. To find
[ ]
A. Found B. Finding
C. Find
D. To find
参考答案: