give the correct form
1.you (not lose) ..... weight, if you (eat)........ too much junk food
2. most people ( leave)........before the volcano erupted
3. chess ( play ).......... for around two thousand years
4. our car pumps out a lot of...........gas everyday(poison)
5.Scotland has rich..........(cultural)
6. Air ........ has risen day by day. (pollute)
7. Water was........with poisonous chemicals ( contaminate)