No matter how busy he is, he never forgets to smile.

He is a master of the piano.

He escaped from the police using the technique of slipping out of ropes.

He is a master of slipping out of ropes, no matter how tightly he is tied, he can get loose quickly.

His shoelaces came untied.

While I was running, my shoelace came untied.

The police gave him a close questioning.

The police questioned him closely.

He felt bound by the contract.

He tied up his hands and feet and put him in the corner of the room.