9. the skills you have that allow you to do something 10. the basic part of something, on which everything depends 11. something that you consider likely to be true even though no one has told you directly or you have no proof 12. very dirty b. Use some of the key words above to complete these sentences. 1. The surface water made the road 2. This study is the 3. It's unfair to make 4. As well as one 5. The children were completely 6. You should never in the sea. for drivers. of the whole research programme. about teenagers being lazy and untidy. a further 17 people were injured. after playing in the mud. your ability or strength when swimming​