_______(104)
A.challenges
B.difficult
C.change
D.opportunity

Cool temperatures, shade, moist, and the presence of dead organic material provide the ideal living conditions for mushrooms.
A.moist
B.dead
C.provide
D.conditions

Not until recent has interest in synthetic fuels been revived.
A.recent
B.has interest
C.synthetic
D.been revived

Instead of ______ about the good news, Peter seemed to be indifferent.
A.exciting
B.being excited
C.to excite
D.to be excited

_________(97)
A.deed
B.action
C.document
D.effort

_______(86)
A.point
B.finish
C.purpose
D.end

_______(88)
A.for
B.of
C.in
D.about

The children sing loudly ________ .
A.as though they are the winners
B.though they are the winners
C.as if they were the winners
D.were they the winners

_________(95)
A.at
B.on
C.among
D.in

_________(96)
A.means
B.so
C.shows
D.says