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

　參考答案&解析：

　　1、D　非謂語動詞做狀語，其邏輯主語是句中主語。The hidden meaning不能執(zhí)行read的動作，所以排除A、B;C項屬于動名詞獨立主格結構，在句中做主語。故答案為D。

　　2、A　and連接兩個名詞表示“一副，一雙，一套等或一個人兼兩個職務”，即用一個冠詞或物主代詞限定兩個名詞做主語，謂語用單數形式。故答案為A。

　　3、D　explain/ announce等后面的結構是～ sth. to sb. 或～ to sb. sth.，to 不可省略。第二個空白處應填when，表示“正當……的時候”。故答案為D。