31．The lecture mainly deals with the trouble young children have right from wrong .

You couldn’t have chosen any ________giftfor me.—I’m glad you like it so much.

— Look!Somebody ________ the sofa.— Well, it wasn’t me. I didn’t do it. [ ]

He looked rather untidy as there were two buttons _____ from his coat.

Sarah pretended to be cheerful，________nothing about the argument.