—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 |
Try____ she might, Sue couldn’t get the door open.
| A．if | B．when | C．sine | D．as |
（2012全国新课程）I don't believe we've met before, I must say you do look familiar.
| A．therefore | B．although |
| C．since | D．unless |
I had hardly got to the office ______ my wife phoned me to go back home at once.
| A．when | B．than | C．until | D．after |
—Look at those clouds!
—Don’t worry. ______ it rains, we’ll still have a great time.
| A．Even if | B．As though | C．In case | D．If only |
All the photographs in this book, _______ stated otherwise, date from the 1950s.
| A．unless | B．until | C．once | D．if |