({#blank#}1{#/blank#})1. A. run       B. pencil     C. ruler      D. eraser

({#blank#}2{#/blank#})2. A. eat       B. milk       C. drink     D. shout

({#blank#}3{#/blank#})3. A. yellow    B. window     C. white    D. black

({#blank#}4{#/blank#})4. A. what      B. where      C. ball     D. how

({#blank#}5{#/blank#})5. A. shout      B. talk        C. pencil case   D. run

  Air has no c{#blank#}1{#/blank#}, t{#blank#}2{#/blank#}, s{#blank#}3{#/blank#}or shape. We can't see it or smell it, but we can f{#blank#}4{#/blank#}it. Air is e{#blank#}5{#/blank#}around us. When air moves, it becomes w{#blank#}6{#/blank#}. The air moves quickly and the wind blows s{#blank#}7{#/blank#}. The air moves s{#blank#}8{#/blank#}and the wind blows g{#blank#}9{#/blank#}. Air is i{#blank#}10{#/blank#}to all of us. Without air, we will all d{#blank#}11{#/blank#}. Dirty air is b{#blank#}12{#/blank#}for our health. So let's try our best to k{#blank#}13{#/blank#}the air clean.

⑴{#blank#}1{#/blank#}A. teach B. skating C. learn

⑵{#blank#}2{#/blank#}A. ice B. snow C. think

⑶{#blank#}3{#/blank#}A. walking B. skate C. standing

⑷{#blank#}4{#/blank#}A. asks B. bags C. says

⑸{#blank#}5{#/blank#}A. fall B. stand C. again