Thank you for us so much help.A. givingB. giveC. to giveD. gives

问题补充：

Thank you for us so much help.

A. giving

B. give

C. to give

D. gives

答案：

(答案→)A. giving

B. give

C. to give

D. gives

解析：介词后跟动名词，for为介词，故后用动名词，故选A,giving。