Washington ______ get very hot and sticky in summertime. July and August are usually the warmest months.

Some of my classmates _________ after school every day.

--- Shall I get one more cake fro you, David?--- Thanks, but you ______. I’ve had enough.

—There's someone knocking on the door．Who        it be?—It must be Mary．She promised to be here at 8：00．

—Does your uncle still smoke?—He ____________given it up. It’s two years ever since he ____________.