Mark the letter A, B, C or D on your answer sheet to indicate the best answer of each following questions.

“You stole my best cassette, Bob.” said Willy.

A. Willy accused Bob on stealing his best cassette.

B. Willy accused Bob for stealing his best cassette.

C. Willy accused Bob at stealing his best cassette.

D. Willy accused Bob of stealing his best cassette.