题目内容：

方框中所给单词的适当形式填空。(每小题1分，共5分)

spend   weigh   slow   leaf  succeed

1.Spring is coming and the             turn green.

2.If we walk            , we'll be late for the film.

3. --What are they doing? --They are            an elephant.

4.He is very happy because he has            in passing the exam.

5.Mrs. Smith             three thousand yuan on the gold necklace.