根据句意及所给首字母提示，在空白处填人一个适当的词。

1. There are some books on the t       of the box.

2. Sauce is a kind of r       .

3. On Thanksgiving Day, Americans like to eat t      .

4. As we all know, fast food is very p       in Western countries.

5. Please follow the cook's i        to make a banana milk shake.