题目内容：

写出下列句子划线部分单词在句中所担任的成分（共5小题，计2.5分）

1.How was your school trip? (                   )

2.Jack Brown has an interesting job. (                   )

3.Look! Boys are playing soccer on the playground. (                   )

4.Who visited the fire station? (                   )

5.They had lunch at the restaurant. (                   )