Belly During the first days of October when the eruption peaked, billions of gallons of meltwater filled the lake to bursting, prompting officals(1) to warn that an explosive glacial flood was imminent. 1) why do we use gerund here at (1)? " is a participle phrase, which is used to describe an action happens at the same time as the main action.
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BellyDuring the first days of October when the eruption peaked, billions of gallons of meltwater filled the lake to bursting, prompting officals(1)to warn that an explosive glacial flood was imminent.
1) why do we use gerund here at (1)? "prompting officials ..." is a participle phrase, which is use