___ a very rough sea, with waves ten metres high.
| A．It were | B．This will be | C．It was | D．There’ll be |
Alice was lucky enough and she was the only one of the girls in her school who __________ to France as an exchange student.
| A．have been sent | B．has been sent |
| C．was sent | D．were sent |
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 |