When the school building began to shake, the teachers randownstairs ____ all the students. The teachers are real heroes.A. after B. with C. before
— Tomorrow is Saturday, why don’t we play basketball in the gym? —Good idea, ________ I have to see my grandparents.
—________ you open the window, please? —Yes, I can.
There are two dogs in my family. One is white,_____________ black.
I am _______________than my mother, so I am very happy.
—________ is your favorite sport? — Swimming.