用所给单词的适当形式填空。

1. She _____ (return) the book to me yesterday.

2. The boy is the _____ (young) in our class

3. The Yellow River is the second _____ (long) river in our country.

4. That girl was born in _____ (Greek).

5. Our team _____ (win) a game last month.

6. This isn't take-away foot. It is home_____(cook).

7. When I opened the door, I found Sandy_____(play) on the floor.

8. Either my father or I _____ (work) on a farm this week.

9. My sister does some _____ (run) every morning, so she is very healthy.

10.Would you like _____ (have) dinner with me tonight?

如图是青蛙发育过程中某些阶段的示意图，据图回答下列问题：

（1）青蛙发育过程的顺序是：D→______．

（2）图中的B用______（填“外鳃”或“肺”）呼吸．

（3）青蛙的生殖和发育在水中进行，青蛙进行______（填“体内”或“体外”）受精．

（4）蝌蚪的形态和结构与成蛙的区别很大，青蛙的发育方式为______发育．