Thank you ________ helping me a lot.

1. A.
   of
2. B.
   for
3. C.
   from
4. D.
   in

Thank you ________ helping me ________ my English．

1. A.
   for, to
2. B.
   to, for
3. C.
   for, with
4. D.
   in, at

[　　]

Thank you ________ helping me ________ my work.

A. for; to

B. to; for

C. for; with

D. in; at