题目内容
2. 昨晚睡觉时我们不该开着窗户。
We__________ the windows open when sleeping last night.
2. oughtn't to/shouldn't have had
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题目内容
2. 昨晚睡觉时我们不该开着窗户。
We__________ the windows open when sleeping last night.
2. oughtn't to/shouldn't have had