UNIT 6POISONOUS AIR AND CANCER, BUT NO ONE WANTS TO TRAVEL ON FOOT OR...

4. - Everybody knows that cars emit dangerous gases ______ .b. Why should we use banana leaves to wrap food?a. so they do not travel by car any longer c. It would be better if we use banana leaves to wrap food.b. so they prefer traveling by bicycled. How about banana leaves to wrap food?c. but they still prefer traveling by car