--- ______ Betty this morning? --- Not yet, but she is sure to be here before noon.
The factory used 65 percent of the raw materials, the rest of which _____ saved for other purposes.
One third of the country _____ covered with trees and the majority of the citizens _____ black people.
—I heard a bus accident happened yesterday.—The bus crashed. Luckily, only a few passengers aboard were _____ injured in the traffic accident.
The news _____ the prime minister will pay a visit to our school next week has not yet being confirmed.
The old lady likes to keep things in the house, _____ throw them away, though many are useless.