26. The professor was asked to write an article for the newspaper, ___________about the left-behind children in the countryside.
John is very ——if he promises to do something he’ll do it .
The good thing about children is that they very easily to new envionments.
It took building supplies to contruct these energy—house . It took brains , too .
Over the past decades , sea ice in the Arctic as a result of global warming .
The medicine works more effectively you drink some hot water after taking it .