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
