______that managers commit in problem solving is jumping to a conclusion about the cause of a given problem.
A.Major errors
B.Since the major error
C.The major error
D.Of the major errors

The best known books of Ross Macdonald, ________ writer of detective novels, feature the character Lewis Archer, a private detective.
A.is the
B.is an
C.they are by
D.the

It was very _________of you to notice that.
A.observe
B.observation
C.observatory
D.observant

The house is______ fire, Send____ the Fire Brigade.
A.on - for
B.on - to
C.in - for
D.in - during

A university education is of course important but it is essential that all employeesundergo a period of intensive_______
A.preparation
B.learning
C.training
D.concentration

“Those students will perform a play." “Yes, it is _______for next week.“
A.due
B.scheduled
C.time-table
D.put on

As consumers’ response to traditional advertising techniques declines, businesses are beginning ______new methods of reaching customers.
A.the development that
B.is developing
C.develop
D.to develop

The American Academy of Poets, ______the 1930’s, provides financial assistance to support working poets.
A.when it was founded
B.was founded
C.which was founded in
D.was founded in

Scientists believe the first inhabitants of the American arrived by crossing the land bridge that connected Siberia and ______more than 10,000 years ago.
A.this is Alaska now
B.Alaska is now
C.is now Alaska
D.what is now Alaska

Margaret Brent, because of her skill in managing estates, became ________, largest landholders in colonial Maryland.
A.what the
B.one of the
C.who the
D.the one that