Sam often hears the singer ----in the next room.1sing 2 sing

I often hear him _____ ( sing ) in the next room. Millie si often heard sing in the next room改错 She often hears someone --------songs in the room.A.to sing He is often heard -----in the next room.A sing B to sing C s We often hear her sing in the next room中为什么用sing而不用sings he was often heard ()in the next room.A.to sing B.sing do you hear ming --- in the next room?1,sing 2,to sing 3,sin listen!lucy 【】【sing】in the next room I often heard () (sing) in the room The girl ------to sing the song in the next room A.often pra I often hear her sing in the next room.We must repair the co I often hear him _____ ( sing ) in the next room.为什么答案上要求加in