请教885-188

188. For many travelers, charter vacations often turn out to cost considerably more than they originally seemed.

(A) they originally seemed

(B) they originally seem to

(C) they seemingly would cost originally

(D) it seemed originally（A）

(E) it originally seemed they would

为什么不选b 加了to有什么不对？

http://forum.chasedream.com/dispbbs.asp?BoardID=23&ID=20444

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thank you for your link but it do not answear my question ,I still don't understand it very well

(A)的seemed后面省略了to cost

所以(B)的to 多余 且A时态比较好 表示比 turn out 之前