Which one of the following words has the suffix - ing added correctly?

A. Hopeing

B. Stoping

C. Findding

D. Talking

The answer is:

D) Talking

D. Talking

A is incorrect because an "e" would be added before - ing.

B is incorrect because 2 "p" would have to be added before the - ing.

C is incorrect because there would have to be only 1 "d" before the - ing.

So D is the correct one.