Have you returned the book to the library ____? —Yes, I have ____ returned it.

He madedecision to visitEiffel Tower the next day.

Most of the young girls know they should cut down on fat, but knowing such a thing isn’t of much help when it ______ shopping and eating.

Excuse me. You shouldn’t smoke here. Look at the sign “NO SMOKING HERE”.–Sorry, I ________ it just now.

Only by this means _______ complete the task ahead of time .