[ Vocabulary & Grammar ]
My mother buys blueberries very often, and she thinks the ____________ they contain can improve our eyesight.
A. products
B. substances
C. convenience
D. environment
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Vocabulary › Viewa layer of hot, solid rock directly below the crust
A. crust
B. mantle
C. inner core
D. outer core
E. magma
Conjunctions › View
Roger is _______ a skilled sportsman ________ a clever businessman.
A. both, and
B. not only, but also
C. both a and b
D. since, and
Intermediate Prepositions › ViewDo you have a free access ___ this site?
A. at
B. to
C. for
D. of
Prepositions › View
The anti- smoking campaign had quite an impact _____________the young.
A. On
B. In
C. By