1. The girl students enjoy_______(sing) English songs. 2. The child is old enough _______(go) to school. 3. I saw someone _____________(go) the house when you went out. 4. He told his brother ___________(go) out tonight. 5. It takes us half an hour ________(read) English every day. 6. The boss made them _______(work)long hours a day. 7. The teacher asked him ________(stay) after class. 8. She finished _________(read) the story—book two days ago. 9. They stopped __________(listen) but there was no more sound. 10. When the teacher came in, the students stopped ________(talk).