Nowadays, many teenagers__________ themselves to the computer games, which made them ___________ from the society.
| A．cancel, benefit | B．desert, leave | C．quit, range | D．abandon, withdraw |
He will give us a report on how to study English well, but when and where ________.
| A．is still unknown. | B．hasn’t decided |
| C．is known | D．haven’t been decided |
We should work together to build a society for kids, ________free from war and violence.
| A．one | B．this | C．it | D．that |
He slipped(溜进) into the classroom without ___________.
| A．noticed | B．noticing |
| C．being noticed | D．was noticed |
This special strain of rice makes _________ possible to produce one third more of the crop in the same fields.
| A．it | B．them | C．which | D．that |
---Is that the small town you often talk about?
---Right, just the one ______________ you know I used to work for three years.
| A．that | B．which |
| C．where | D．what |