We teenagers shouldn’t be impatient _____ our own problems. _____ they are solved, we can never give up.
| A．in; Till | B．with; Since |
| C．to; Until | D．with; Until |
Martin was so busy ______ the old that he gave up his part-time job.
| A．helping | B．helped | C．to help | D．help |
My friend invited me ______ the art club , and I accepted it with pleasure.
| A．join | B．to join | C．joined | D．joining |
Over $30,000 ______ for a children’s hospital by a British girl several months ago.
| A．is raised | B．was raised |
| C．will be raised | D．has been raised |
Tim told us that his company ______ robots to do some of the work.
| A．uses | B．will use | C．has used | D．would use |
Now Jerry ______ the exchange programme with his classmates in the meeting room.
| A．discussed | B．is discussing |
| C．was discussing | D．has discussed |