1. You had a long day, you must be tired.2. You should eat more fruits and vegetables. It's good for your health.3. You should read this book. It's very interesting.4. How can I help you?5. He has a big family, he has to work every day.6. The conference must begin on Monday.7. I couldn't call him yesterday, I was very busy.8. Can I call you tomorrow afternoon?9. This is a very interesting movie. You should see it.10. I have to get up early since I live far away from work.He went on business trip last month или in the last month
(оба варианта допустимы)