Everyone 1 air. Air is all around us. lt's around us when we go and play. Since we were bom,air has been around us on every side. 2 we sit down,it's aroundus. When we go to bed,air is 3 around us. So we can say we live in air. All living things 4 air. Living things can't live 5 air. We can go without food or water for more than a few days. But we can't live for more than a few 6 without air. When we are sleeping,we need less air. We live in air, _7 we can't see it. We can only feel it. We can feel it when  it  is  moving (移动 ) . Moving air is wind. 8_ can you make air move?  Here is one 9 . Hold an open book in your hands in front of yourface. Close it 10 , and what can you feel?  It's air. (     )1. A. know    '  B. knows                   C. knowing          D. knew (     )2. A. When       B. What                    C. Why               D. How (     )3. A. also          B. too                       C. either              D. neither (     )4. A. like          B. don't like               C. needs             D. need (     )5. A. with         B. thout                      C. for                 D. of (     )6. A. years       B. days                       C. minutes          D. months (     )7. A. but          B. because                   C. so                 D. if (     )8. A. Why        B. How                       C. What            D. Where (     )9. A. way         B. road                        C. street           D. bench (     )10.A. quick      B. terrible                     C. soon           D. quickly