Dilbilgisi (By the time people with HIV...)

By the time people with HIV ............ AIDS, the virus ............ their immune systems.
A) develop/has damaged
B) developed/will damage
C) will develop / was damaged
D) had developed / is damaged
E) developing / would have damaged

Çözüm: Zaman uyumuna uyan bir tek A seçeneği vardır. by the time, after, before, as soon as gibi yapılarda zaman uyumu aranmalıdır.


A) develop/has damaged --> zaman uyumu var 
B) developed/will damage --> past - future zaman uyumu yok
C) will develop / was damaged --> future - past zaman uyumu yok
D) had developed / is damaged -->Past perfect - present zaman uyumu yok
E) developing / would have damaged --> would have v3 için if clasue lazım.