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xercise 2. Choose the correct option:
a) My father have / has been to London.
b) My parents have / has been to New York.
c) I have / has studied English since I was 3 years old.
d) Marta have / has worked at Fontarron school for 5 years
e) I haven't / hasn't visited my granparents since last month.
f) Coronavirus have / has killed many people.​