Is it he or you ________ in charge of the job and supposed to complete it on time?.
| A．who is | B．that is | C．who are | D．whom are |
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 |