你昨天晚上八点钟在做什么？
你昨天的这个时候在做什么？
昨天我给你打电话时你在做什么？
昨天下午4点钟左右你在做什么？——我在听音乐。
What were you doing at about 4 o 'clock yesterday afternoon? -i was listening to music.
昨天他们来看你时，你在做什么？
昨天下午四点钟左右你在做什么？我在听广播。
What were you doing at 4 o 'clock yesterday afternoon. I was listening to the radio.
昨天这个时候你在做什么？
昨天下午三点钟左右你在做什么？
What were you doing at about 3 o 'clock yesterday afternoon?
昨天下午四点钟左右你在做什么？
What were you doing at about 4 o 'clock yesterday afternoon?
昨天晚上七点你在做什么？
昨天晚上七点你在做什么？
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