They were happy last night.（划线部分提问：happy）

They were happy last night.（划线部分提问：happy）
They were happy last night.（划线部分提问：happy）

They were happy last night.（划线部分提问：happy）
答案：【How were they last night? 】

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How were they last night ? 他们昨晚怎么样？
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你好，

问句是：

How were they last night ？

They were happy last night。
（划线部分提问：happy）：

How were they last night?

纯手工打造，绝对正确，祝学习进步，谢谢！