English grammar help! Hello all, I've been slightly confused by a piece of article grammar. See the sentence below: "The teacher made the students work in groups for ________ most activities" The space was for an article (either the, a/an or no article) and the answer is no article. But a student of mine asked me: why don't we say 'the most activities' as we're talking about the specific activities rather than something general. I honestly don't know, and realise that 'most of the activities' would be fine, but can't tell why we use no article in this case. I would love to be enlightened here! Thank you!