从所给出的单词中选出合适的完成对话。

supermarket     meat     shopping    rainy    tomatoes

 Tom: Mum, there's no food at home. Let's go ____today.

Mum: But how's the weather?

 Tom: It's a sunny day. It's not____

Mum: OK. Is there any____in the kitchen?

 Tom: No, there isn't.

Mum: Are there any ____or potatoes?

 Tom: There aren't any potatoes but there is only one tomato.

Mum: All right. Let's go to the ____now.

下列现象中，不可能引起家中保险丝熔断的是：

在▱ABCD中，AB、BC、CD三条边的长度分别为（a﹣3）cm、（a﹣4）cm、（9﹣a）cm，则这个平行四边形的周长为 ____cm．