The money collected should be made good use ________ the people in Taiwan who suffered a lot in the earthquake.

Certainly I posted your letter---I remember ____it.

Many gases        in the atmosphere actually        heat energy that escapes from the Earth’s surface back to the earth.

. — Did Peter fix the computer himself?— He __________, because he doesn’t know much about computers. 

After completing and signing it, please return the form to us in the envelope ________.