Mario lost his English dictionary yesterday and (she,he) has not been able to find (it/them)until to day.

Mario lost his English dictionary yesterday and he has not been able to find it until to day.

=> Translate :
Mario kehilangan kamus bahasa Inggrisnya kemarin dan dia belum dapat menemukannya sampai hari ini.

Maaf jika salah. Semoga membantu ^_^