My former English teacher, who ____ in our school for over 20 years, now lives in his
hometown in Yangzhou.
| A．has worked | B．worked | C．had worked | D．works |
It remains __________ whether this teaching method will be better than that one.
| A．to see | B．to be seen |
| C．seeing | D．seen |
It was not until midnight __________ they reached the camp site.
| A．that | B．when |
| C．while | D．as |
His album won several awards at the music festival，__________ was beyond his wildest dream.
| A．which | B．that |
| C．where | D．it |
The young man we followed stopped and looked as if __________ whether he was going in the right direction.
| A．seeing | B．to have seen |
| C．having seen | D．to see |
__________ untidy, his bedroom needs doing out.
| A．Look | B．Looking |
| C．Looked | D．To look |