A.finally they came to this conclusion B.they drew this conclusion at lastC.finaaly they reached tothis conclusionD.they arrived at this conclusion at last四个句子那个错了,说明原因

问题描述:

A.finally they came to this conclusion B.they drew this conclusion at last
C.finaaly they reached tothis conclusion
D.they arrived at this conclusion at last
四个句子那个错了,说明原因

C reached 不加to