You _______have a wrong number. There’s no Mr Johnson here.

、Tom is a top student in our class , How        it be that he was a failure in the last exam?

--- I haven’t got the reference book yet, but I’ll have a test on the subject next month. --- Don’t worry. You _______ have it by Friday.

  To make our city more beautiful, rubbish _________ into the river.

If you ________ smoke in the room, please keep the windows open.