The old man _________ in Shanghai, but he _______ in Nantong now.
—Listen! Is Mary singing in the next room? —No. It _______ be Mary.She has gone to Shanghai for an important meeting.
.Hurry up, ________ you’ll not catch the first bus.
The old men in hospital ______________.
Beihai Park is a beautiful place that many people come to visit it every day.
The boys when the teacher came in. So she was very angry.