The sentence "we can do to keep them down is great", which I used the grammar webpage to check. The grammar webpage is showing it is correct. But I think the more correct sentence would be "whatever we can do to keep them down is great". It is means "whatever" can be omitted, right?

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    Whatever the webpage says, the sentence does not make sense. It needs a subject such as whatever or anything. Sep 21, 2020 at 9:32
  • @Kate Bunting. thank you for replying. let me modify this sentence 1. "we concern the cost, whatever we can do to keep them down is great." 2. "we concern the cost, we can do to keep them down is great." which one is correct? thank you again.
    – wei tung
    Sep 21, 2020 at 9:41
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    Cost is singular, so it should be keep it down (or use costs instead). You still need a subject for the main clause. We're not supposed to do proofreading, but I'll just mention that the first part needs to be Concerning the cost(s), or As concerns the cost(s). Sep 21, 2020 at 9:49

1 Answer 1


"Whatever" is necessary, because the sentence requires an object of "can do."

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