Three-fourths of the surface of the earth___sea.
. Online learning is being widely____to help adults further their education.
. Walter offered us a lift when he was leaving the office ,but our work__,we refused the offer.
. ____ as the most excellent student in her college, as most classmates had expected, made her parents very happy.
. Many CD companies had intended to get much from the business, but it ____ so bad.
. The poor woman with her two children _____ in a street corner.