What can we do to bird flu(流感) —Do not buy or eat ill chickens.

If our government loses ________ of food safety , our health will be in_________.

Mike lives near a(n) . He says he would like to move because of the noise from the planes.

He is always picking up very heavy things just to ________ his strength.— What a man![ ]

You may find the key to the math problem on page 107．—Ah, it’s so simpleI wonder why I _____ of that