根据句意,用所给动词的适当形式填空。
(1)To keep safe, everyone____ (tell) to wear a seat belt in the car now.
(2)If we cut down the trees, floods____ (wash) our village away.
(3)The microphone is used to____ (make) your voice sound louder.
(4)All the team members were seen____ (train) hard when I passed the room.
(5)Mr. Dong ____ (live) here since he was born.