To express a concern or express concerns is using the word in its countable noun sense, which refers to one or more specific concerns - a concern being particular element or thing to be concerned about. … However, there are concerns that they[certain drugs] could pose a serious health risk to humans. However, there is concern that they[certain drugs] could pose a serious health risk to humans. H... Commercial builders downplayed ______ a bust in the superheated housing market. 1) The concern of 2) Concerns about The answer is number 2, but why does number 1 not work?

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- The story concerns the prince's efforts to rescue Pamina. - The book is primarily concerned with Soviet-American relations during the Cold War. - This chapter concerns itself with the historical … For @Billy Kerr :β€˜Bob or Sarah have any concerns’ is not an exception; it is non-standard/informal usage in conversation. In teaching/learning settings or in writing it is not acceptable. singular vs plural - "there are concerns that" VS "there is concern ...

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