34. in the driving test twice, he decided it again.
| A．To fail; not to take | B．Having failed; not to take | C．On failing; not taking | D．Failing; not to take |
_____ she was very tired, she went on working.
| A．As | B．Although | C．Even | D．In spite of |
Busy _____ he was, he tried his best to help you.
| A．as | B．when | C．since | D．for |
I learned a little Russian _____ I was at middle school.
| A．though | B．although | C．as if | D．when |
_____ we got to the station, the train had left already.
| A．If | B．Unless | C．Since | D．When |
_____ the rain stops, we' 11 set off for the station.
| A．Before | B．Unless | C．As soon as | D．Though |