1.collect/collection

Researchers spent six months ¡¡¡¡¡¡¡¡¡¡facts and figures. 

A ¡¡¡¡¡¡¡¡¡¡¡¡of empty wine bottles stood on the cupboard. 

2.percent/percentage

Twenty ¡¡¡¡¡¡¡¡¡¡¡¡¡¡of the products are exported. 

What ¡¡¡¡¡¡¡¡¡¡¡¡of Earth is covered by oceans? 

3.settle/settled/settler/settlement

After the ¡¡¡¡¡¡¡¡¡¡¡¡of our differences,we became friends. 

It’s time for you ¡¡¡¡¡¡¡¡¡¡¡¡your differences with your father. 

It is said that the first ¡¡¡¡¡¡¡¡¡¡¡¡of this country were prisoners. 

She was tired of moving around and wished for a more ¡¡¡¡¡¡¡¡¡¡¡¡existence.