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— Come and join us, Betty!
— I’m afraid I can’t. I’m too busy now. If I ______ time, I would certainly go.

A．haveB．have had
C．will haveD．had

D

解析試題分析：句意：--貝蒂，來加入我們吧！--恐怕我不能。我現在太忙。如果我有時間，我當然會去了。分析：考查if引導的虛擬語氣。表示與現在事實相反的虛擬條件句。其句子結構為：從句：If + 主語+ had +過去完成式動詞+ ……主句：主語+ would (should, could, might) + have +過去完成式動詞+……故選 D
考點：考查虛擬語氣的用法。

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