I’ve been working on the project for the new cleaning machine for small objects, but I don't really know ________ about cleaning agents, I'm afraid.

Question

BlackTom AI · Accepted Answer

In this question, we’re choosing the word that completes the sentence naturally and grammatically.
Option a: 'anything' — This fits perfectly: 'I don’t really know anything about cleaning agents' is a common, natural way to express a lack of knowledge. It uses the standard phrasing after 'know' when talking about knowledge in general. 
Option b: 'somehow' — This word doesn’t work here. 'Know somehow about' sounds odd and ungrammatical; 'somehow' modifies manner or ability, not the object of knowledge in this context.
Option c: 'everywhere' — This would lead to 'I don’t really know everywhere about cleaning agents,' which is nonsensical. It implies knowledge of all places, not knowledge about the topic itself.
Option d: 'no-one' — Replacing the blank with 'no-one' would yield 'I don’t really know no-one about cleaning agents,' which is grammatically incorrect due to double negative and semantics; it suggests knowing no-one, not knowledge about the topic.

Therefore, the sentence with option a is the only natural and correct construction: 'I don’t really know anything about cleaning agents, I’m afraid.'

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I’ve been working on the project for the new cleaning machine for small objects, but I don't really know ________ about cleaning agents, I'm afraid.

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