[ 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

Random Topics:
Articles with SubstancesQuantifiers / Prepositions of Time and Comparative AdjectivesPast Perfect Simple & Past Perfect ContinuousSo Such Enough TooPaired ConjunctionSimple Present and Present Continuous TensesIf Conditional Zero and OneModals and InversionGrammar Error Correction (Simple Present Tense)Indefinite ArticleOther quiz:
Grammar › ViewCan you open the door, please?
A. Yes, I can.
B. yes, you can.
C. yes, they can
D. No, you can’t
Grammar › View
The whole crowd was _________ for the star.
A. Clapping
B. Claping
C. Klapping
D. Klaping
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