Practice Exercise Read each sentenc

Practice Exercise Read each sentence and put the best word in each blank from the Words to Know list. You may need to change the form of the word to make it fit well into the sentence (for example add -ed or-ing to the end of the word). 1. ____________________ materials burn easily, but ____________________ materials burn very easily. 2. The guard used a fire ____________________ in order to ____________________ the fire in the garbage can. 3. It is ____________________ to store oily rags near a furnace because they might ____________________. 4. Some gasses release ____________________ which can be a fire ____________________. 5. The guard ____________________ smoke which was caused by the ____________________ of dry leaves.