Up till now more than 120 world-famous enterprises companies in Tianjin Binhai New Area

问题补充：

Up till now, more than 120 world-famous enterprises companies in Tianjin Binhai New Area.

A. have established

B. established

C. will establish

D. have been established

答案：

(答案→)A. have established

B. established

C. will establish

D. have been established

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