At the root of volunteering is____ idea that one person may have____ ability to offer services that can help other people.
— I'm sorry I've lost your software. Let me buy a new one. —________.
There used to be a temple in your village,________?
The new bridge is ________ the one built last year.
________knowledge a man has,________it is for him to get a good job.
Many chemical substances react________oxygen.