When I visited her,she was in writing a lecture speech on Chinese history.
We should consider the students’ request the school library provide more books on popular science.
Professor Williams keeps telling his students that the future to the well-educated.
With the world changing fast, we have something new with all by ourselves every day.
----I’ve got to go now. ---Must you? I you could stay for dinner with us.
Peter was so excited he received an invitation from his friend to visit Chongqing.