Answer the guestions. Use the works in brakets and "for" or

Answer the guestions. Use the works in brakets and "for" or "ago".
a) (five days) When did Dmitrys friend arrive in Astana?
b) (five days) How long has he been in Astsns?
c) (three years) How long has yor friends been learning English?
d) (three years) When did he start learning English?
e) (an hour) What time did you start your lunch?
f) (an hour) How long have you been eating your lunch?
Пожалуйста помогите! заблаговременно громадное спасибо.