用所给单词的适当形式填空。

1. Tiger Woods              (start) golfing when he               (be) 4 years old.

2. When was your father             _ (born) ?

3. You are never too old            _ (learn).

4. Lily               (start) writing music when she was seven years old.

5. How old              (be) she when she became a player?

6. Ronaldo is a                (Brazil) soccer star.

7. Selina went to her                (one) movie when she was four.

8. Thomas Edison was famous for his scientific                (achieve) .

房屋建筑工程的地基基础质量状况直接关系到整个建筑物的安危。地基沉降是造成工程事故影响建筑物正常使用的主要原因，地基土的质量也是引发工程事故的因素之一。 要求： (1)地基沉降对建筑物的影响有哪些产生地基沉降的原因是什么 (2)特殊土地基产生的工程事故及其原因是什么