Read the definitions carefully and select the correct words.
1. a covering, especially one made of cloth, that can be rolled up and down to cover a window inside a building
2. twelve
3. to let liquid fall in drops
4. a statement of how much it will probably cost to build or repair something
5. the outside of something, especially a building
6. to succeed in contacting someone by telephone after trying several times
7. to get something that is rare or difficult to find
8. a fatty or oily substance that comes off meat when it is cooked, or off food made using butter or oil
9. covered in grease or oil
10. a toilet
11. the part or surface of something that is furthest from the centre
12. someone whose job is to repair water pipes, baths, toilets etc
13. an entrance covered by a roof outside the front door of a house or church
14. not exact, not containing many details, or not in a final form
15. a spare key/battery/clothes etc that you keep in addition to the one you usually use, so that it is available if the one you usually use breaks, gets lost etc
16. a flat narrow piece of wood or stone, especially one in a series, that you put your foot on when you are going up or down, especially outside a building