单项选择题
A. Children have fun dialing. B. Emergencies happen without warning. C. Children can wake their parents. D. Dialing can help children with their math study.
A. die from the cold water in Iceland B. be happy to return home C. want to be free D. be less active
A. Match your presentation to the needs of your audience. B. Make sure to wear your best clothes. C. Bring detailed handouts. D. Know your material thoroughly.