uare familiar with the author’s ideas, try reading all the sections as quicklyas you can

All the _________ things need air and water. Without air or water, nothing can stay _______.

With Mike _____ as our group leader, we had no trouble finishing the task ahead of time.

_ is even important is ______ as the earthcooled down, water began to appear on its surface

I hope there will be ____ cars and ____pollution in the future, thus people will live longer.