<h1>A.</h1><p>1. I want to check <strong>in</strong> to the website.</p><p>2. I couldn't sign <strong>up</strong> to the school.</p><p>3. When will you come <strong>back</strong> from your trip?</p><p>4. You can throw <strong>off</strong> your coat.</p><p>5. Can you turn <strong>down</strong> the lights? It's too dark.</p><p>6. If you're too hot, take <strong>it</strong> off.</p><p>7. That book belongs <strong>to</strong> the school.</p><p>8. Try not to fall <strong>over</strong> on the ice.</p><p>9. When it's your turn, stand <strong>up</strong> and say your name.</p><p>10. You have to sit <strong>down</strong> before the plane can take off.</p><h1>B</h1><p>1. Our train gets <strong>in</strong> at $13:00.</p><p>2. I don't like to get <strong>up</strong> early on weekends.</p><p>3. We like to go <strong>out</strong> to eat once a week.</p><p>4. We're lost. We should go <strong>back</strong> to the post office.</p><p>5. I don't want to talk to you. Please go <strong>away</strong>.</p><p>6. Put your toys <strong>away</strong> before dinner.</p><p>7. Where's your hat? You should put it <strong>on</strong> before you go out.</p><p>8. When you are finished, put <strong>down</strong> your pencil on the table.</p><p>9. You may turn <strong>in</strong> your test paper and begin.</p><p>10. If you have a phone, turn it <strong>off</strong> during the show.</p><h1>C</h1><p>1. switch <strong>off</strong> the lights.</p><p>2. look <strong>up</strong> a word in the dictionary.</p><p>3. hand <strong>in</strong> your homework.</p><p>4. write <strong>down</strong> your ideas.</p>