What do you say when asked to say something in Japanese?

At break with coworkers today, I mentioned learning Japanese since a bit over a year now. I was then asked to say something in Japanese, but I couldn't really think of anything good.

On my way home, I formulated a little something that I could say the next time I get asked:

「今月に桜が綺麗です。」

Do any of you have such default sentences, and if so, what are they?

Edit: Wikipedia has the following as an example:

「太陽が東の空に昇る。」