: 1. The reason you feel this way is(is глагол to be) that you don't know how the other person will react
2. They are(are глагол to be) also very likely to smile back and help you feel more comfortable about starting a conversation.
3. The best way to have interesting conversations is(is глагол to be) to be an interesting person!
4. This way they'll know you're(are глагол to be) interested in them