Give the correct form of the verbs in the brackets:
1. You must put all chemicals in _____________ cupboard. (LOCK)
2. Don’t leave the light on. It wastes ______________________. (ELECTRIC)
3. The river is very _____________ for swimmers, especially young children. (DANGER)
4. Those thick clothes seem to be _____________________ for cold weather. (SUIT)
5. She is always worried about the _______________ of her family. (SAFE)
6. Mary read all the __________________ that could happen in an apartment. (CAUTION)