Mr. Black ______ my art teacher last term, but now he ______.A. was, isn’tB. is, isn’tC. was, wasn’t
— How do you study English so well? — I study ________ reading English magazines.
—Look at the sky! What is it? —Oh! _______UFO is landing on the ground.
——Could you tell me ____?——It’s twenty minutes by underground.
——Oh, I had a terrible toothache. ——You’d better see a dentist and have your bad teeth out.
——Simon has got 95 points in the math test!——Wow!______________ he has made!