句型转换。

1. I need one apple. (改为一般疑问句)

    ______ you ______ one apple?

2. They need yogurt. (改为否定句)

    They ______ ______ yogurt.

3. Drink the smoothie. (以he为主语改写句子)

    ______ ______ the smoothie every day.

4. We need one teaspoon of cinnamon. (对划线部分提问)

    How ______ ______ of cinnamon do you need?

用一张长8分米，宽6分米的纸剪一个最大的圆，这个圆的面积是______，周长是______．