Scientists think they have in their attempt to find the causes of some major diseases A broken through B worked though C got thought D gone though
The reason ____ their failure you know is _____ they didn’t get fully prepared for the experiment.
Then ____ that the war was over.
A new report ____ on Monday by the Census Bureau ____ a sophisticated method to measure poverty rates has found that 46.6 million Americans are living in poverty.
—Kathy and her sister are so alike. —I can’t tell one from ____.
It is said that ____ wool produced in Australia is of ____ high quality.