—The water in the glass is sweet. Did you put any ________ in it?
—Yes. I added some just now.

A．sugar

B．salt

C．oil

D．sand

—I’m sorry I ________ my exercise book at home this morning.
—It doesn’t matter. Don’t forget ________ it here this afternoon.
A. left; to take     B. forgot; bringing
C. left; to bring   D. forgot; to bring