_____ in the regulations that you should not tell other people thepassword of your e-mail account.

He offered to her a hand as the suitcase was too heavy for her to carry.

We can have ________ bluer sky if we create _________less polluted world.

learned from my book that it was nothing but ten years of hard work that ______ his success in business.

The gasoline _______. Let’s fill the car up at thenext gas station.