According to the timetable， the train _____ at 8：27．
Don't worry． We can catch it．（ ）
| A． |
leaves |
| B． |
is leaving |
| C． |
is going to leave |
--Sorry, I overslept. I forgot to set the alarm.
--Your clock ________. Perhaps you should buy a new one.
| A．never worked | B．never works |
| C．had never worked | D．is never working |
Be quick, we’ll be late for the meeting.
| A．and | B．but |
| C．so | D．or |
I still remember my first teacher __________ we haven’t seen each other for many years.
| A．for | B．because |
| C．since | D．Though |
They have been friends __________ they were at primary school.
| A．before | B．as soon as |
| C．since | D．when |
I’ll go to visit my uncle in England ________ the winter holidays start.
| A．while | B．since |
| C．until | D．as soon as |