Jack is a bright and diligent boy______ his brother Tom is just the opposite.

A.when　　　　　　　 B.as　　　　　　　 C.while　　　　 D.however?

Tom was thinking about how to explain to the teacher why he was late for class, when a good idea ______ to him.　

A. happened　　 B. brought　 C. occurred　　　 D. struck

Her parents were both very _____, because she was out so late last night.
   A. sorry   B. worried   C. lonely    D. calm

If you want to increase the sales of your products more quickly, you’d better start an ad c______ using different media.

On the man’s face , there was a smile that seemed to suggest that he _______ in suggesting that the

　 meeting ______ off .

　 A. should succeed , was put　　　　 B. succeeded , put　　

　 C. should succeed, be put　　　　　 D. succeeded , be put

There were no signs that the fire had been set ______ (故意地).