请填入合适的词，补全对话。

A: Hey, Julia. Don't 1_____ to turn off the lights.lt saves electricity.

B: Oh, I know. I usually do that. I was just in a 2_____. How long

    you're so interested in the environment, Jack?

A: I always have been. Lots of people 3_____ there's nothing they

    can do, but I have just read this article about it, and there are lots

    of things the average person can do.

B: Like what?

A: Well, you should turn off the shower when you’re 4_____ your hair.

B: Oh, I'd 5_____ do that.

A: You wouldn't?

B: No, I have very short hair. I'm only in the shower for a few minutes.

A: Well, every minute helps.