I argued ________ my good friends yesterday. What should I do?[ ]

Mom, where’s my backpack?－You shouldn’t put your things casually, you should take good care of _____ own things.

I know the boy _____ the teacher.[ ]

Mr. Ding, thank you our English classes fun. —You’re welcome.[ ]

I think _________ of the materials I listened to at the beginning of the exam __________ easy.