1. If I (come) home earlier, I (prepare) dinner.
=> If I came home earlier, I would prepare dinner.
2. If we (live) in HCMC, my boyfriend (visit) us.
=> If we lived in HCMC , my boyfriend would visit us .
3. If Tung and Thanh (be) older, they (play) in our football team.
=> If Tung and Thanh were older, they would play in our football team.
4. If he (be) my friend, I (invite) him to my birthday party.
=> If he was my friend, I would invite him to my birthday party.