which sentence contains a gerund?\nduring the night, the temperature plummeted twenty degrees.\nto navigate…

which sentence contains a gerund?\nduring the night, the temperature plummeted twenty degrees.\nto navigate the winding road safely, we concentrated intensely.\non the first torrid day of summer, we always enjoy swimming.\nthe contemptible birds singing in the yard annoyed us all night.
Answer
Brief Explanations:
A gerund is a verb - form that functions as a noun and ends in -ing. In the sentence "The contemptible birds singing in the yard annoyed us all night", "singing" is a present - participle acting as an adjective to modify "birds". In "we always enjoy swimming", "swimming" is a gerund as it is the object of the verb "enjoy" and functions as a noun. The other sentences do not have gerunds.
Answer:
The contemptible birds singing in the yard annoyed us all night. (Incorrect as "singing" is a present - participle here); we always enjoy swimming. (Correct as "swimming" is a gerund)