The opening day of Expo Shanghai China we have been forward looking to to arrive.A. b

问题补充：

The opening day of Expo Shanghai China we have been forward looking to to arrive.

A. being

B. be

C. is

D. will

答案：

A. being

B. be

(答案→)C. is

D. will

解析：表示按时间表、计划、规定将要发生的动作，用一般现在时。