Although the problems were rather ______(77. DIFFICULTY), they managed to ______(78. SOLUTION) all of them.
A.difficult/solute
B.difficult/solluting
C.indifficult/ solving
D.difficult/solve

_________(57)
A.many
B.a lot
C.much
D.lots

____________(59)
A.ever
B.never
C.already
D.lately

All the following are mentioned as events that can affect food supply EXCEPT .
A.erosion of soil
B.contamination of soil
C.reduction of nutrients
D.loss of water supply

VII. From the four words or phrases choose the one that best completes the sentence.
Green plants combine ______ with water and carbon dioxide to make food.
A.energy derived it from light
B.energy derived from light
C.energy is derived from light
D.from light, and energy derived

VII. From the four words or phrases choose the one that best completes the sentence.
Only by reproducing at a tremendous rate ______ to survive in the sea.
A.many plant and animal species manage
B.do many plant and animal species manage
C.manage many plant and animal species
D.plant and animal species manage many

He doesn't have any informations about the departure and arrival time of today's flights.
A.informations
B.about
C.time
D.today's

The mother asked her son what did he want for his birthday.
A.asked
B.her son
C.did he want
D.his

Throughout the United States there is fast food restaurants where hamburgers a are served.
A.Throughout
B.is
C.where
D.are served

Helen was proud for finishing the work in such a short time.
A.for
B.finishing
C.such
D.a short time