摘要：8． When he the door, he found his keys were nowhere. A. would open B. opened C. had opened D. was to open 答案 D 解析 考查非谓语动词.动词不定时的用法.句意为:当他要打开门的时候,他发现他的钥匙不见了.动词不定时表示将要发生的动作.

网址：http://m.1010jiajiao.com/timu_id_3859230[举报]