听录音，选出你所听到的句子。 ( ) 1. A. Air keeps the paper high in the sky.B. Air keeps the balloon high in the sky. ( ) 2. A. We should walk every day.B. We should read every day. ( ) 3. A. There are a lot of cars in the street.B. There are a lot of bikes in my school. ( ) 4. A. We use paper to make toys.B. We use wood to make toys. ( ) 5. A. We should stop at the red light.B. We should walk at the green light.
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