【正文】
Please _____ your chair _____. 。 Answer two questions before reading: does Air look like? is Air useful for? No colour, no smell, no taste. We need to breathe. Read and fill in the blanks. 1. Air has no _____ and no _____. When the wind blows, you feel the _____ on your face. 2. A kite or a plane _________ to stay in the sky. 3. A balloon uses ______to rise in the air and ______ people up. 4. “We need air to survive” means “Air _____ us