下列关于商誉的说法，正确的有（）。

A.只有少数企业具有商誉

B.所有企业都具有一定商誉

C.商誉价值取决于企业在同类企业中超额收益

D.鉴证商誉价值时，鉴证者需了解被鉴证企业行业收益水平

E.鉴证商誉价值时，鉴证者需了解被鉴证企业成本状况

用所给动词的适当形式填空。

1. He _____ (be) born in 2002.

2. How long did he _____ (hiccup)?

3. I looked carefully but _____ (see) nothing.

4. Mike often _____ (go) swimming when he was young.

5. Mozart _____ (start) writing music when he was four years old.