As the twentieth century came to a close,the raw materials for a great national literature were at hand,waiting ______.
—Hi, Tom . Any idea where Jane is?—She _____in the classroom . I saw her there just now.
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.
Peter was so excited _______he received an invitation from his friend to visit Chongqing.