A survey suggests that the royal wedding of Prince William and Kate Middleton a great boo

问题补充：

A survey suggests that the royal wedding of Prince William and Kate Middleton a great boost for British economy because a large number of visitors are expected to go.

A. will be

B. has been

C. was

D. be

答案：

(答案→)A. will be

B. has been

C. was

D. be

解析：本题考查时态。根据宾语从句中because a large number of visitors are expected to go从句用一般现在时，故主句用将来时态。选A。