题目内容：

根据句意，在答题卷标有题号的横线上，写出括号内所给单词的适当形式。

1.She’s a _____________ (marry) woman， and she has two lovely children.

2.He was _____________ (tie) his dog to the tree when I saw him yesterday.

3.This kind of animal has three _____________ (stomach)， isn’t it amazing?

4.It takes me a long time to get to school every morning because I live in the _________ (north) part of the city.

5.PM 2.5 _____________ (pollute) has become a serious problem which does harm to our health.