The rules that punish the students for their bad actions and habits get the students _________.
| A．to worry | B．worrying | C．worried | D．worry |
Mary is the only one of the teachers who __________ a little Chinese because she is one of my friends who __________ been to China.
| A．knows; have | B．knows; has |
| C．know; have | D．know; has |
Joan is one of the best writers who __________ published a lot of books.
| A．has | B．have |
| C．have been | D．are |
It is the first time that I __________ the video of Gangnam Style.
| A．had watched | B．watched |
| C．am watching | D．have watched |
I have heard a lot of good things about you __________ I came back from abroad.
| A．since | B．until |
| C．before | D．when |
John thinks it won't be long __________ he is ready for his new job.
| A．when | B．after |
| C．before | D．since |