My parents are     teachers. They work in the same school.

I’m surprised that John is only 25. I thought he was ________ , for he seems to be in his thirties.

My dog is gentle and never bites.So you needn’t be_______.

–Did you visit the 23rd National Books Expo last month?–Yes, it was really ______. We saw many famous people, like Mo Yan, Ni Ping and Yu Dan.

She worries __________,so she often feels much___________.