look at the lights in our classroom, please go and .
| A．turn them off | B．turn off them | C．turn it off | D．turn off it |
This is the very thing ______ belongs _____.
| A．which; her | B．that; her | C．which; to hers | D．that; to hers |
She kept on _______ until midnight though he was tired.
| A．work | B．worked | C．working | D．to work |
The program is _______ interesting _______ I want to see it again.
| A．too; to | B．so; that | C．as; as | D．so; as |
People in Shenzhen are proud of what they have _______ in the past thirsty years.
| A．achieved | B．helped | C．guessed | D．known |
Tests are provided to see if students have _______.
| A．got over | B．made sure | C．got off | D．made progress |