下列各句中加点词的词类活用情况与例句相同的是例：契丹与吾约为兄弟

How did your students express their thanks to youon Teachers’ Day—A gift together with many flowers _______ sent tome .

I am sorry_____ I have caused so muchtrouble.

Shanghai Zoo is very famous. Every year ______ people visit it.

Internet is ________ used by people, especially by young people.