Before the final examination, many students have shown ______of tension. Some have trouble in sleeping while others have lost their appetite.

The new safety regulations were agreed on after _____ with the work-force.

In a way it was a(n)______ to know exactly what we were up against.

Mrs. Obama introduced the Let’s Move _______ yesterday. Its goal is to reduce children obesity(肥胖) today and in the future.

Our milk powder is especially suitable for children under 6, as it helps a lot to build the body's natural ________.