The police are the cause of the forest fire which broke out last week
| A．looking into |
| B．looking at |
| C．looking after |
| D．looking around |
Is ____ necessary to complete the design before National Day?
| A．this | B．that | C．it | D．he |
Was it during the Second World War_____ he died?
| A．that | B．while | C．in which | D．then |
Joan had often heard____ said that Marley had no money.
| A．it | B．this | C．that | D．one |
I hate___ when people talk with their mouths full.
| A．it | B．that | C．these | D．them |
The Parkers bought a new house but ____ will need a lot of work before they can move in.
| A．they | B．it | C．one | D．which |