Some farmers have _____________ keeping deer, and there are now about 4,500 deer farms in the country.
It was rude ______ you to stare at the foreigner when he passed by just now.
—Where is Bob? I cannot find him anywhere.—He have been off long. I heard him make a call just now.
_______ is known to us all is that Madame Curie, _______ life was devoted to science, wonthe Nobel Prize twice.
The tablecloth _____ 18 by 20 feet. A. is measured B. measures C. measure D measuring
It is the test system, _____ the teachers, that is to blame for the heavy burden of middle school students nowadays.