1. If you need to contact someone urgently, you can ask their family member
2. The cheapest way to stay in touch is to keep their contact phone number
3. If you need to find some information quickly, you can surf the internet
4. If the person you call doesn't answer, you may not answer them
5. 100 years ago if people wanted to communicate with each other, they talked to each other
6. If you want to wish someone a happy birthday, you can congratulate them
7. If you are on vacation and want to contact your friends, you can call or text them
8. If you are going out and you want to leave a message for a family member, you can text them
9. If you want to say thank you for a meal or a gift, you can say thank you to them.
10. If you're bored and can't think of anything to do, you can study