题目内容

_________ happened to be no one in the building when the fire broke out.
A.ItB.ThereC.ThisD.That

B
there be 句型和happen连用表示碰巧有-----=
There was no one in the building when the fire broke out.
Do you expect there to be a possibility that Palestine and Israel will make a peace agreement after
Yasser Arafar died.
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