根据首字母或汉语提示，补全单词。

1. I _____ (参加) you for breakfast this morning.

2. My mother is making soup. It smells _____(香).

3. They enjoyed _____ (种) vegetables.

4. He won, we are p_____ of him.

5. I built one of my rockets m_____ at home.

在采用FOB贸易术语的进口业务中，进口商若使用L/C支付方式，简述其在履约阶段的业务操作流程。