An interesting discovery was made by archaeologists on the aegean island of kea.这句话里面为什么要加was made呢?

disco DISCO an interesting an interesting an interesting An interesting an interesting book An interesting hobby翻译 An interesting day 作文 an interesting booK an interesting subject是什么意思 what an interesting film! what an interesting film. such an interesting和such interesting区别 Disco Stick What an interesting film it 英语作文 an interesting experiment 英语作文-An Interesting Thing