. John ____ speak three foreign languages. 2. You ____ work

. John ____ speak three foreign languages. 2. You ____ work hard at your English, if you want to know it. 3. Mary ____ be in this room. It is her voice. 4. Everyone ____ obey the law. 5. Mary ____ have gone to bed earlier last night. She is very tired today. 6. The policeman told the woman she worry. 7. You ____ see a doctor.