MY PEN PAL LIVES IN THE USA. WE HAVE _________ FOR YEARS BUT WE HA...

13. My pen pal lives in the USA. We have _________ for years but we haven’t met each other yet. A. worked B. corresponded C. talked D. writtenIV. Find one mistake in the four underlined parts of each sentence. Write your answer (A, B, C orD) on your answer sheet.