I don’t know who invented ________ telephone. It’s really ________ most useful invention.
| A．the; a | B．/; a | C．a; the | D．/; the |
George returned after the war, only _______ that his wife had left him.
| A．to be told | B．telling |
| C．being told | D．told |
It doesn’t matter ________ you pay by cash or credit card in this store.
| A．how | B．whether |
| C．what | D．why |
My first _______ of him was that he was a kind and thoughtful young man.
| A．expression | B．attention |
| C．satisfaction | D．impression |
Maria has written two novels, both of ________ have been made into television series.
| A．them | B．that |
| C．which | D．what |
— Sorry I’m late. I got stuck in traffic.
— _________. You’re here now. Come in and sit down.
| A．You are welcome | B．That’s right |
| C．I have no idea | D．Never mind |