it is very kind____you to help me get the ticket of F1 a.for

題目：

it is very kind____you to help me get the ticket of F1 a.for b.to c.with d.of 選哪個?

解答：

d .of
it is +adj+of sb+to do sth
kind（友好的）是修飾人的
而it is +adj+for sb +to do sth中的adj是修飾物的