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siren
mastery UK /ˈsaɪəɹən/ US /ˈsaɪɹən/nounverbnameadj
card 1 of 10 · fill in the blank
When the fire alarm went off, someone _____ the siren to warn people in the building.
card 1 of 10 · fill in the blank
When the fire alarm went off, someone _____ the siren to warn people in the building.