Did you know _______?A.what was the matter B.what the matter was 选哪个?

Did you know _______?A.what was the matter B.what the matter was 选哪个?
Did you know _______?A.what was the matter B.what the matter was 选哪个?

Did you know _______?A.what was the matter B.what the matter was 选哪个?
选B.宾语从句用陈述语序.
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不明白请继续追问,

一定选择A

此题选A。What's the matter?/What was the matter?/Waht's wrong?/Waht was wrong?这几句话在宾语从句中语序是不变的。