go on
grow up
give up
carry out
wash up
put up
pick up
throw away
cut down
stay out
b)
1. Large companies cut down the trees for valuable hardwood.
2. Don’t throw things away. Use them in another way.
3. Litter collectors pick up all the litter near cafes and restaurants.
4. Let’s put up a notice about a football club.
5. He usually washes up after dinner.
6. Students must carry out all the necessary work at the lesson.
7. He gave up watching horror films before going to bed.
8. He wants to be a pilot when he grows up.
9. She always goes on about her school problems.
10. My mother doesn’t allow me to stay out so late.