Weegy: B. present tense, present participle, past tense, past participle. are the principal parts of a verb
User: In which of the following sentences is the underlined word a concrete noun?
A. He was helping the boys to finish their chores.
B. Running is her favorite pastime.
C. She was thinking about the children all day.
D. When the bus arrived, the driver began talking to us.
Weegy: Im sorry no word is underligned. Pls ask a question.
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