--- Can I walk across the road now, Mrs. Chen?---No, you ______. You have to wait until the light turns green.
His parents ____ coming to meet the teacher tonight. A. are B. were C. is
Miss Lee ___the children an English song when I saw her. A. is teaching B. was teaching C. taught
—Must I hand in the weather report this morning? --No, you__. A. mustn't B. needn't C. may not
The teacher will be backan hour. A. in B. after C. on
Look! The bird __in the sky. A. is flying B. flies C. fly