That's very kind  ______  you. I know it's very hard  _______  you to do that.
#41366
A
of, of
B
of, for
C
for, of
D
for, for
推荐题目
He is taller than _______ girl in his class. 
#39347
A
any
B
other
C
any other
D
another
 He could play the violin when he was five. 
#37023
A
at the age of five
B
five years later
C
for five years
D
five years age