Is it that you often play computer games worries your parents?A. whyB. thatC. whichD. wh

问题补充：

Is it that you often play computer games worries your parents?

A. why

B. that

C. which

D. what

答案：

A. why

(答案→)B. that

C. which

D. what

解析：考查强调句。强调句的基本构成是：It is/was＋被强调部分＋that/who＋句子其他成分，它的一般疑问句是把is/was置于句首。还原题干可以看出，该句中被强调的部分是前一个that引导的主语从句，所填的that是强调句的构成部分。句意：是不是由于你经常玩电脑游戏，才让你的父母担心的？故B正确。