一瓶氩气能存放多久:英语选择

来源：百度文库 编辑：查人人中国名人网 时间：2024/10/04 04:03:16
I didn't know what ___ , but I knew something was wrong.
A. was the matter B. the matter was

选什么？为什么？
the key is A

选B,因为这应当用陈述语气所以用陈述语序

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