1. You must've left it at home.

2. You must've loved her.

3. You must've seen the accident.

4. You must've been a cute baby.

5. You must've worked very hard.

6. You must've been busy yesterday.

7. You must've taken some cold medicine and slept yesterday.

8. You must've haven't understood her.

9. You must've slept then.

10. You must've had the reason why you ask for it.

1. If I were you, I would buy this.

2. If I were you, I would wait a moment.

3. If I were you, I wouldn't bather you.

4. If I were you, I wouldn't work with him.

5. If I were you, I wouldn't listen to her.

6. If I were you, I would ignore them.

7. If I were you, I would get more advices.

8. If I were you, I wouldn't tell anyone the truth.

9. If I were you, I would find out another job.

10. If I were you, I would wear more warm clothes.