Complete each sentence with a pair of verbs from the box with opposite meanings.
clean up, cut down, let, plant, pollute, prevent, recycle, throw away

a) People should be encouraged to protect the environment rather than destroy it.
b) We should try to ……… disasters happening, not just ………. them happen.
c) Everyone should try to ……. beaches, and not ……. them.
d) It would be a good idea to ………. more trees, not to ……… trees.
c) We can use things again if we …….. rather than ……… them.