1．The doctor suggested that he change his way of living (live)．
2．Most people here are unwilling (willing) to give up their cars. They don't want to use buses instead.
3．At that time we had to make the assumption (assume) that the disease was spreading and took action to stop it.
4．Plastics have taken the place of many conventional (convention) materials.
5．He stood up and said something in defence (defend) of himself.
6．As we all know, healthy eating is beneficial (benefit) to our health.
7．If no agreement (agree) was reached, the army would step in.
8．The people in the earthquakestricken area are in urgent (urge) need of food, medicine and shelters.
