—How clean the window is!—Yes, it just now.A、cleaned B、has been cleaned C、was cleaned
— Dad, why must I stop_____ computer games? —For your health, my boy.
—Cathy, could you come to our art club tomorrow? —________________.
There are about ______ students in your school.
To my_____, he has such a haircut today.
Though he studies very hard, ______ his English is not good.