Sir, you should__________ at the red light.--------Do you remember?
A.stop B.have stopped
C.not have stopped D.stopped
Sally took a photo of her friends while they computer games.
A.play B.are playing
C.have played D.were playing
When I came here just now, I saw he _______with a black and white dog in the garden.
A.play B.to play C.was playing D.plays
—You were out when I dropped by your house.
— Oh, I_________ in Zhongbai Supermarket with my parents.
A.was shopping B.had shopped
C.am shopping D.have shopped
—I forgot to bring my dictionary. Could I use yours? — Yes, you _______.
A.can B.must C.could D.should
My father is able to _______many different kinds of computers.
A.look up B.take up C.fix up D.clean up