喝酒后开车是非常不负责任的行为。

Driving after drinking is completely ___irresponsible.

她把车钥匙忘在门上了，真是太不负责任了。

She left the car keys on the door—that was so ___irresponsible.

把车钥匙给一个喝醉的人是完全不负责任的。

Giving car keys to a drunk person is completely ___irresponsible.