1、_____ the essay a second time, the hidden meaning will become clearer to you.

　　A. While reading　　B. After reading

　　C. Your having read　　D. When you read

　　2、The newspaper's owner and editor _____ away on holiday.

　　A. is　　B. are　　C. be　　D. have been

　　3、She was just about to explain _____ she hadn't passed her Maths test chiefly out of carelessness _____ her uncle came.

　　A. her mother … when　　B. to her mother why … that

　　C. her mother that … when　　D. to her mother that … when

　参考答案&解析：

　　1、D　非谓语动词做状语，其逻辑主语是句中主语。The hidden meaning不能执行read的动作，所以排除A、B;C项属于动名词独立主格结构，在句中做主语。故答案为D。

　　2、A　and连接两个名词表示“一副，一双，一套等或一个人兼两个职务”，即用一个冠词或物主代词限定两个名词做主语，谓语用单数形式。故答案为A。

　　3、D　explain/ announce等后面的结构是～ sth. to sb. 或～ to sb. sth.，to 不可省略。第二个空白处应填when，表示“正当……的时候”。故答案为D。