.
_____ you don’t lose heart, I’m sure you can pass the coming examination.
| A．Unless | B．As long as | C．If not | D．Although |
She __________ an old friend of hers yesterday while she was shopping at the department store.
| A．turned down |
| B．dealt with |
| C．took after |
| D．came across |
—My son has won the singing competition.
—__________！
| A．Thank you |
| B．Congratulations |
| C．You are right |
| D．Good luck |
The book __________ ten units, two revisions
| A．contains ； including |
| B．includes ； containing |
| C．includes ；contained |
| D．contains；included |
—Why didn't he attend the meeting yesterday?
—__________ he caught a bad cold and now he is in hospital.
| A．Now that |
| B．Since |
| C．Because |
| D．As |
Many years ago, he dreamed of becoming the first person __________ both South and North Poles.
| A．reaching |
| B．to reach |
| C．to have reached |
| D．having reached |