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9．It was really tiring for me to stand in the queue for two hours to get the G-train ticket．
You    ．You could have got one online．（　�。�
A．needn't haveB．needn't
C．didn't need toD．didn't need to have

分析 -為了買動車票，我排了兩個小時的隊，真累．
-真沒必要，你本可以在網上買一張的．

解答 答案：A 題干中You could have got one online表示對過去事實的相反假設；對過去事實的相反假設，要用情態動詞加完成時態；答語是簡略回答，have是助動詞，標志著完成時態，不可省略．故選A．

點評 虛擬語氣是表示與事實相反的假設，構成方式有：對現在或將來，條件句中用一般過去時態，主語用情態動詞加動詞原形；對過去，條件句中用過去完成時態，主語用情態動詞加完成時態．學習時，要牢記構成方式．

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