트다

clear; open

Explanation

1. clear; open
To remove blocking objects and make the part passable.

2. open
To open a market, etc.

3. get acquainted
To start a friendship with someone, neither mutually cautious nor shy.

4. start business with
To form a relationship with someone with whom one trades things mutually.

5. speak casually to
To become close to someone and to be able to speak casually.