请解释英语试题,谢谢!
填空(请解释为什么?谢谢!)
1、The teacher looked (_angrily_) at that moment and couldn't say a word.（anger）[为什么加“ly”]
2、This information will make them (actively) takeaction to protect wildlife.[为什么加“ly”]
3、What do you think (makes) your bast friend so special?[为什么加“s”]
4、--where is Mr Li?--He is busy with the (operation).[为什么operate不加“s”]
5、Who would you like to have (write) the report,Lucy or Sandy?[为什么write不加“s”]