—I hear Jane has gone to the Holy Island for her holiday.
—Oh, how nice! Do you know when she ?
| A．was leaving | B．had left |
| C．has left | D．left |
All the task __________ ahead of time, so they decided to go on holiday for a week.
| A．having finished | B．had finished | C．having been finished | D．had been finished |
—I didn’t know this was a one-way street, officer.
—________.
| A．That’s all right. | B．I don’t believe you. |
| C．How can you say that? | D．Sorry, but that’s no excuse. |
It seems that living green is __________ easy and affordable. A small step makes a big difference.
| A．exactly | B．fortunately | C．surprisingly | D．hardly |
It was in the small house _____was built with stones by his father ____he spent his childhood.
| A．which; that | B．that; where | C．which; which | D．that; which |
__________ environmental damage is done, it takes many years for the ecosystem(生态系统) to recover.
| A．Even if | B．If only | C．While | D．Once |