His suggestion will be to us.A. of helpfulB. very helpC. of great benefitD. of very use

问题补充：

His suggestion will be to us.

A. of helpful

B. very help

C. of great benefit

D. of very use

答案：

A. of helpful

B. very help

(答案→)C. of great benefit

D. of very use

解析：可联系答.案.网客服索取。