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30. In my opinion, all Mr. White ___ good to his students in his class at present. He is very strict in their study.

A. does does does                                      B. does do do

C. does does do                                         D. did do does 

C


解析:

Mr. White does為定語從句修飾all。后面的does do是謂語動詞的強調形式。

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改正下列短文中的錯誤。請根據上下文對標有題號的每一行作出判斷;如無錯誤,在該行右邊橫線上劃一個勾(√);如有錯誤(每行只有一個錯誤),則按下列情況改正;

       此行多一個詞:把多余的詞用斜線(\)劃掉,在該行右邊橫線上寫出該詞,并用斜線劃掉。

       此行缺一個詞:在缺詞處加一個漏字符號(∧),在該行右邊橫線上寫出應加的單詞。

       此行錯一個詞:在錯詞下劃一道線,在該行右邊橫線上寫出改正后的單詞。

       注意:原行沒有錯誤的不要改。

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