My best friend visited my house while I __ __ dinner in the kitchen.

Sorry, Doctor Smith isn’t here right now.—May I ____ a message on his desk?

There is still a copy of the book in the library. Will you go and borrow ?—No, I’d rather buy in the bookstore.

English __________ all over the world.

Can I use your bike this afternoon?_______ is under repair.－No problem. Here’s the key.