Children don't （）understand what they are reciting, but gradually it will have an impact on their thinking. A: necessarily B: profitably C: unnecessarily D: unprofitably

Children don't （）understand what are reciting, but gradually it will have an impact on thinking. A: necessarily B: profitably C: unnecessarily D: unprofitably

Children don't ______ understand what are reciting, but gradually it will have in impact on thinking. A: necessarily B: profitably C: unnecessarily D: unprofitably