— I feel grateful to you for your help with my English, Amy.

— It’s my pleasure. ______

A．The grass is always greener on the other side.

B．Every dog has its day.

C．That’s what friends are for.

D．Many hands make light work.

擦法作为临床常用的治疗手法，具有较好的（）作用，能治疗一切（）