Mark the letter A, B, C, or D to indicate the most suitable response: Mary: " Thanks a lotĐoạn văn21/40Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges. Mary: " Thanks a lot for your help.’’ -------- Nick: "____________."My happinessMy delighMy excitementMy pleasureGiải thíchĐáp án D.