______ that the earth was flat?A、Used it to be thoughtB、Did it used to be thoug

游客2025-04-13 27

问题 ______ that the earth was flat?

选项 A、Used it to be thought
B、Did it used to be thought
C、Was it used to being thought
D、Does it used to be thought

答案 A

解析 It used to do句型的疑问句形式可以为Used it to do...?或者Did it use to do...?

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______thattheearthwasflat?A、UsedittobethoughtB、Diditusedtobethoug