Although telling lies is sometimes unavoidable, such behaviors cannot be thought as______.

A．His son hit him on the arm.
B．He stumbled over a stone arid fell.
C．He bumped the arm against a piece of furniture.
D．He knocked over a coffee pot.

A．She requests the man not to call her again.
B．She requests the man to call her in a few days.
C．She requests to change a salesman.
D．She requests a cheaper price for what the man offers.