15. You have to keep all ………………………… objects out off the children’s reach. (danger)
16. The rice………………………….is next to the stove. (cook)
17. Mr. Bell demonstrated his ………………………… at a lot of exhibitions. (invent)
18. You should…………………………listen to the pool lifeguards (careful)
1 dangerous
2 cooker
3 invention
4 carefully