"You should be careful," my friends said to me. My friends said to me that I should be careful. My friends said to me that I should have been careful. My friends told me that I should have been careful. My friends told me that I should be careful.

Задание

"You should be careful," my friends said to me.

My friends said to me that I should be careful.
My friends said to me that I should have been careful.
My friends told me that I should have been careful.
My friends told me that I should be careful.