1) concentrate a) on b) at c) for d) in 2) be fond a) at b) of c) in d) on 3) free a) on/from b) at/of c) for/in d) from/of 4) be interested a) on b) of c) at d) in 5) involve a) in b) at c) on d) of 6) prefer smth a) than b) to c) rather d) rather than 7) listen a) for b) to c) from d) at 8) be sure a) of b) about c) in d) at

Grammar and Vocabulary unit4 Prepositions

દ્વારા
એમ્બેડ

લીડરબોર્ડ

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