Einstein’s most famous theory is ______ we call the Theory of Relativity.

US president George Bush ____ the war in Iraq on March 20,2003But internationally, the US war in Iraq _____ as one country misusing its power over a weaker nation

If the machine makes a mistake — ____ rarely happens– it gives a warning in the form of a red light.

Einstein liked Bose’s paper so much that he _____ his own work and translated it into German. [ ]

Totally ______ accident, the businessman picked up a _______ antique (古董) in the flea market (跳蚤市场) [ ]