They are antonyms. Pollute and purify are opposite meanings. Pollute means to ruin or make something unclean, while purify means removing the harmful or dirtiness out of something.
1. What can search the Internet and select elements based on important words? - a browser
1.) eating 2.) becoming 3.) to see 4.) swimming 5.) wearing 6.) staying 7.) tidying 8.) helping 9.) finishing 10.) working
Answer:
B. There were not enough firefighters to do all the necessary tasks.
Explanation:
We can tell from the first sentence that there was not enough help. Even without knowing any background on the story, we know there was just a thin circle of engines around the fire. In order to deprive the fuel of fire, the firefighters asked spectators to help by chopping up fences and sidewalks. This way the fire fighters could focus on the engines.
