Respuesta :
Answer:
Have been
Explanation:
Has been responds to a singular subject so it would work if it was just writing or just reading, have been responds to a plural, so it responds to both reading and writing therefore the answer is have been
Answer:
Have been
Explanation:
Has been responds to a singular subject so it would work if it was just writing or just reading, have been responds to a plural, so it responds to both reading and writing therefore the answer is have been