A. with B. to C. for D. by
A. in their turn B. in their return C. in return D. in their turns
A. to; thus B. for; thus C. of; therefore D. with; however
A. contrary with B. to the contrary C. contrary toD. on the contrary to
---You are quite free now, I think. ---_______, I have tons of things to do.
A. On the contrary B. on the opposite C. With the contrary D. For the contrary