1. If people (stop)............ using dynamite for fishing, a lot of sea creatures (be )...........
well preserved.
2. There (be ).............. big floods every year if you (cut).............. down the trees in the forests.
3.If we (work).............. hard, we (make ).................this beach a clean and beautiful again.
4. She (lose) ...............her job if she (go) ................to work late again.
5. They (lose) ...............their way if they (not take) .................a map.
6. Nam (stay) ..................at home if it (rain) ..................heavily.
7. What (happen) ..................if the pollution (increase)...................?
8. Frogs and toads (die) ................ a lot if people (continue )...........to use electricity to catch fish.
9. If Lan (not have) .............. a bicycle, she (not go) camping with us.
10. If the students ( not throw).............. plastic bags anymore, our school yard (clean) ...............