You aren’t concentrating on your work. What are you thinking _____?

If you have a problem, talk _____ the teacher.

Where’s the cash desk? I’d like to pay _____ this book.

I’m not interested _____ what you think or what you want.

What are you listening _____ ?

I think you’re wrong. I don’t agree _____ you at all.

“I’ve lost your pen. Sorry ...”
“It’s all right. Don’t worry _____ it.”

“What did you talk _____ ?”
“Oh, this and that.”

We might have a picnic. It depends _____ the weather.

“What do you think _____ Pete?”
“I really like him.”