谁能用is，are，was，were，wasn’t，weren’t造句〈一个词语造两句〉？

He is a teacher
My father is a doctor

My grandma was a nurse before
There was a pond in the park before

这些都是be动词啊。is，was，wasn’t用于第三人称单数；are，were，weren’t用于复数和第二人称。

She is a singer.
They are all good people.
They were in london 2 years ago.
I wasn't mean to hurt you.
They weren't teachers but doctors 1 year ago.