Ex 4. Fill in the blank with "use, used to, be used to, or be used for":
1. I often..
2. I....
3. There..
4. They..
5. These bricks.
this pen to write my lessons.
love Ann but now she gets on my nerves.
be a tree in front of my house.
.... a computer to do the most complicated calculations.
building a new school.
cut oranges.
6. That knife.
7. American women..
8. Cheques and credit cards.
9. It took me a long time to.
10. Metal and paper.
being independent.
storing wealth.
..wearing glasses.
making money