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精英家教網 > 高中英語 > 題目詳情
When he ______ the door, he found his keys were nowhere．
A．would open B．opened C．had opened D．was to open
3．D
考查非謂語動詞。動詞不定時的用法。句意為：當他要打開門的時候,他發(fā)現他的鑰匙不見了。動詞不定時表示將要發(fā)生的動作。
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