Today, the forests have almost gone. People must ________ down too many trees.

1. A.
   stop to cut
2. B.
   stop from cutting
3. C.
   be stopped to cut
4. D.
   be stopped from cutting

Today the forests have almost gone. People must ________ down too many trees.

A. stop from cutting

B. stop to cut

C. be stopped from cutting

D. be stopped to cut

Today the forests have almost gone. People must _________ down too many trees.

[　　]

A. stop to cut

B. stop from cutting

C. be stopped to cut

D. be stopped from cutting