I don't know what I should eat for lunch today.(改为同义句)

I don't know what I should eat for lunch today.(改为同义句)
I don't know what I should eat for lunch today.(改为同义句)

I don't know what I should eat for lunch today.(改为同义句)
I'm not sure what to eat for lunch today 或者
I can't decide what to eat for lunch today 都可以