题目内容：

用所给词的适当形式填空。

1.Tea ______ (leaf) are produced in the south of the Yangze River.

2.Could you tell me how ______ (pronounce) the new word?

3.Twenty dollars ______ (be) enough.

4.He spent the rest of his life _______ (teach).

5.Tom writes his homework as _____ (care) as Maria.