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9. Some developing countries ______ about a scarcity of 13. According to educators, people who did chores when they
qualified personnel for some time, and they ______ the were children are more likely to take on responsibilities at
situation by recruiting highly skilled workers from abroad. work ______ relying on others to do so.

A) are concerned / are alleviating A) as well as
B) have been concerned / had alleviated B) rather than
C) will be concerned / have alleviated C) similar to
D) were concerned / will alleviate D) as a result of
E) had been concerned / alleviated E) in terms of

10. The Central American rainforests ______ three thousand 14. ______ on-site electricity ______ efficient community-based
years ago when humans ______ to remove them for sanitation facilities are available in some of the world’s
agricultural purposes, leading to a substantial impact on most isolated and disadvantaged regions.
their extinction.
A) Both / and
A) would have vanished / begin B) Not only / but also
B) could have vanished / have begun C) Neither / nor
C) must have vanished / had begun D) No sooner / than
D) may have vanished / began E) Whether / or
E) should have vanished / were beginning

11. As students actively participate ______ learning activities, 15. The word ‘muscle’ derives from the Latin term ______
they must critically reflect ______ their understanding of ‘little mouse’, which is what Ancient Romans ______
the material and build their own knowledge. flexed bicep muscles resembled.

A) with / for A) meant / had thought
B) in / on B) being meant / have thought
C) into / over C) meaning / thought
D) at / from D) to be meant / would think
E) to / by E) having meant / think

12. Tigers are hunted ______ their fur and trophies, and their 16. Concern ______ the environment and the climate has
habitat has been decimated, bringing them ______ the led buyers, particularly younger ones, to choose electric
verge of becoming extinct. vehicles ______ those that burn fossil fuels.
A) for / to A) about / on
B) from / on B) to / upon
C) by / under C) into / at
D) with / at D) for / over
E) in / from
E) about / beyond

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