When he the door, he found his keys were nowhere. A. would open B. opened C. had opened D

发布时间：2020-08-17 11:48:08

When he       the door, he found his keys were nowhere.            
A. would open
B. opened
C. had opened
D. was to open

网友回答

A. would open
B. opened
C. had opened
(答案→)D. was to open
解析：考查动词时态的用法。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。
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