根据短文内容，用方框中所给单词的适当形式填空。每词限用一次。

be   your  so  under  tomato

 
Is this pen          ?
Let’s have some          .They are good to eat.
Milk        good for you. You can drink it every day.
These bananas look nice,         let’s eat them.
Some boys are          the big tree.