Some students are so ______ that they often make mistakes in their homework.

The meat smells _______. Throw it away.

—You see, “Food Safety” receives thousands of Internet hits a day.—Obviously, it has become one of the________ topics recently.

Good teachers can usually give the students______ advice on their study.

— Are two students enough to help you carry the desk?— No, the desk is too heavy. I need ______ two.