— Do you know this computer?
— Yes. Last Monday.
A．when he buysB．when will he buy
C．when he boughtD．when did he buy
English by many people around the world today.
A．is spokenB．was spoken
C．speakD．spoke
Tu Youyou is a Chinese scientist. She medicine since 1951.
A．will studyB．has studied
C．studiesD．is studying
Liu Yang is excited. He to Tian’anmen Square tomorrow morning.
A．goesB．will go
C．wentD．has gone
— Must I wash my skirt tonight?
— No, you . You can wash it tomorrow.
A．can’tB．shouldn’t
C．needn’tD．mustn’t
Billy is than his brother.
A．tallB．taller
C．tallestD．the tallest
