As a doctor, you can’t be ________ careful.
Can you speak a bit louder? I can’t hear you_________.
Peter ______ ten dollars on the new book. A.spent b.took C.cost D.paid
I would rather have tea ______ coffee.
---Bob, would you like to come to our party? ----_________.
-- ____ __ have you been at this factory? -- Since 2000.