问题
Today the forests are getting fewer and fewer. We must ______ down too many trees.
A:keep people from cutting
B:prevent people from cutting
C:stop people cutting
D:all the above;
B:prevent people from cutting
C:stop people cutting
D:all the above;
正确答案是：
同类题型
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ading books in my spare time, Ialso surf on the internet sometimes.