Weegy: To form the plural of a noun ending in s, sh, ch, or x, you should add es.
User: In the sentence "Mary caught a frog," the common noun serves as A. the verb of the sentence. B. both subject and object. C. the subject of the sentence. D. the object of the sentence.
Weegy: In the sentence "Mary caught a frog," the common noun serves as the object of the sentence.
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