It’s very kind _____you to help me with my lessons. It is hard ____ me to learn them well .

It’s very kind ______you to help me with my lessons. It is hard ______ me to learn them well.

1. A.
   of, for
2. B.
   of, of
3. C.
   for, of
4. D.
   for, for

It’s very kind _____you to help me with my lessons. It is hard ____ me to learn them well .

It is very kind ____ you to help me with my lessons. It is hard ____ me to learn them well.

A. of; for                         B. of; of                                            C. for; of                         D. for; for