The correct answer is:
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[A]: "a gerund phrase as the object of a preposition" .
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Note: This phrase is: "in serving others" .
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The gerund is: "serving" .
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The preposition is: "in" .
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C The kittens in the basket meow loudly for their mother
Hey guys we can do a lunch tomorrow if you’d like to come too so
Duo lingo works pretty good !