28. We finally managed to make the customers of the quality of the vehicle.A. to convince

问题补充：

28. We finally managed to make the customers of the quality of the vehicle.

A. to convince

B. convincing

C. convince

D. Convinced

答案：

A. to convince

B. convincing

C. convince

(答案→)D. Convinced

解析：可联系答.案.网客服索取。