Brown said he was by no means annoyed;_____ he was glad to be able to make himself clearly understood.
| A．all in all | B．for one thing | C．on the contrary | D．by the way |
______ the secret of nature, the young scientist has little time for entertainment．
| A．Devoted to research | B．Devoted himself to research |
| C．Devoted to researching | D．Devoting to research |
_________ into a famous university made his parents very happy.
| A．Tom was admitted | B．Tom be admitted |
| C．If Tom was admitted | D．Tom’s being admitted |
________the working efficiency, the boss allows the employees to have a coffee break.
| A．Improving | B．To improve | C．Having improved | D．Improved |
Only when he read this novel for a second time ________ to appreciate its beauty.
| A．that he began | B．he began |
| C．had he begun | D．did he begin |
I ________ the boy to save the money, but he would not listen to me.
| A．persuaded | B．advised |
| C．suggested | D．insisted |