—When did you buy the book?—Two years ago.That is to say,I________it for two years.
He managed to become a great inventor ___ he left school at 16.
Yesterday morning I was just leaving_________the telephone rang.
---What’s wrong with you, Dave? ---My homework can’t be __________ on time because I’ve left it at home.
We can’t work out the physics problem. Can you tell us ____?
— What did you do last Sunday? —_____________________.