Why don’t you buy bananas when they are much _____apples?
A.less expensive than
B.not expensive than
C.expensive than
D.lesser expensive than

_______ a difficult problem can only be tackled over a number of years.
A.Such a
B.Such
C.So that
D.So

He couldn't afford to_______his car repaired.
A.pay
B.make
C.do
D.get

lt is widely believed ___that human beings are descended from one common ancestor.
A.every
B.all
C.every of
D.all of

"Joseph’s English _____, isn’t it?” “Yes. He ______American television programs every day since he first arrived in san Diego. Soon he will be totally fluent."A.is really improving - has been watching
B.has really improved - has watched
C.really improved - watches
D.is really improving - watches

Suppose flights______ on that day, which other day could we go?
A.are fully booked
B.will be fully booked
C.would be fully booked
D.have been fully booked

The number of the months in a year ______twelve.
A.was
B.were
C.are
D.is

A.romantic
B.popular
C.financial
D.reduction

A.examiner
B.university
C.understanding
D.microscopic

A.canal
B.cassette
C.dinner
D.resource