---What would you do if you a million dollars? ---If I you, I’d give it to medical research.
---May I use your dictionary? ---_____.
He was so tired that he fell asleep ___he went to bed.
Last Thursday when I got to the airport, I ____I had left my ticket at home.
There are two new buildings near the sea, and ____of them are very tall.
The boy ____won the first prize is called Roy.