—How do you like China?—Great changes since I here 8 years ago.A. have taken place; came

问题补充：

—How do you like China?

—Great changes since I here 8 years ago.

A. have taken place; came B. took place; have come C. took place; came

答案：

解析：句意：你觉得中国怎么样？自从我八年前来到这里就发生了很大变化。Since自从，一般与现在完成时连用，表示过去发生的事情一直持续到现在；现在完成时结构为have/has+过去分词； ago之前，一般与一般过去时连用，故选A。