【1】There is an _________ of oil paintings in the museum.(exhibit)

【2】I have decided to write a __________(complain) letter for my broken bike.

【3】I have no __________ (wash) machines in my home.

【4】Chen Dan is not at all ___________ (satisfy) with the lazy robot.

【5】The new robot is moving around __________ (free) in the office.