Did you see a girl with an English book in her hand pass by just now？
No，sir．I ____ a magazine．（ ）
A．readB．am reading
C．was readingD．would read
If you are over 18 years old， you_____ to drive a car in our country．（ ）
A．can allowB．can't allow
C．can be allowed
Grandmother lives with my parents． They _____ her every day．（ ）
A．look atB．look afterC．look for
I _____ some washing when you called me last night．（ ）
A．was doingB．am doingC．were doing
Dad， I want to be a policeman in the future．
Work hard， _____ you will succeed．（ ）
A．orB．andC．but
_____ the mountain is， _____ the air is．（ ）
A．The highest， the thinnest
B．Higher， thinner
C．The higher， the thinner