9．It's high time that we students________ harder as the examination is drawing nearer．（　�。�
A．workB．will workC．workedD．have to work

分析 該是我們學生認真學習的時候了，因為考試臨近了．

解答 答案是C．本題考查It's time that的虛擬語氣的句型．句型"It's/was time that"中，從句中往往用過去時，也可以用"should+動詞原形"，由此判斷答案是C．

點評 在掌握虛擬語氣的規(guī)則的基礎(chǔ)上，判斷題干屬于什么類型的虛擬，然后根據(jù)語境，選用恰當?shù)膭釉~形式表達虛擬．

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