1. Would you like to play ping-pong? (肯定句) _________________________________________________ 2. We can buy some runners. (否定句) _________________________________________________ 3. I don't have a ball either. (肯定句) _________________________________________________ 4. I think so. (否定句) _________________________________________________ 5. I have a basketball. (将主语换为she) _________________________________________________ 6. These are shorts. (就划线部分提问) _________________________________________________