—DoyouknowthemostancientcityinChina—Xi’anwell?—No，thisi...

问题详情：

—Do you know the most ancient city in China—Xi’an well?

—No，this is the first time I ________ here.

A．came         B．have been  C．am coming    D．come

【回答】

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知识点：动词时态与语态

题型：未分类