It was impolite of him ____without ____good－bye
| A．to leave; saying | B． leaving; to say | C． to leave; to say | D．leaving; saying |
--Since you have enough time, why not try going by boat for a change?
---_____________________.
| A．Good idea | B．That’s true |
| C．I suppose so | D．You are too kind |
____she toured Jiu Zhaigou, He was deeply impressed with its beautiful scenery.
| A．The first time | B．For the first time |
| C．It was the first time | D．At first |
Great attention must be devoted ________ agriculture(农业), especially in China,
______ population is the largest in the world.
| A．to be developed; whose | B．to develop; which |
| C．to developing; whose | D．to developing; which |
Though his parents agreed_____ his views, they didn’t_______ him to go there alone.
| A．to; agree | B．with; agree | C．with; allow | D．on; allow |
_____________ that he did quite well in the exam.
| A．He made so rapid progress | B．He made so rapid a progress |
| C．His English made such rapid progress | D．He made such rapid progress. |