Exercise:Which sentence is correct? Lily's mother looked for her for half an hour,but could not find where was Lily Lily's mother looked for her for half an hour,but could not find where Lily He doesn't know when she will come back He doesn't know when will she come back. We don't know where does he come from. We don't know where he comes from• Lily’s mother looked for her for half an hour, but could not find where was Lily. Lily’s mother looked for her for half an hour, but could not find where Lily was. • He doesn’t know when she will come back. He doesn’t know when will she come back. • We don’t know where does he come from. We don’t know where he comes from