It took us ____ to finish the new work. A. three hour and a half B. three and a half hour C. three and a half hours
---___________? ---He is a policeman.
---Can I play computer games now? ---Yes, you ____________.
---Hi, Peter. Tomorrow is Sunday. Would you like ______ with me? ---Yes. Thanks .
______ swim in the lake. It’s dangerous (危险的).
Every morning my father walks or runs _____an hour in the park.