Question

Употребите глагол,данный в скобках,в указанном времени
1 Computer (to help) our space programme,our armed forces,our business and industry,sports and medicine.(Present Indefinite)
2 They are the most afficient servants man ever (to have)(ptesent perfect)
3 Advanced automation (to be) impossible without computers(ptesent indefinite)

Answer 1

1. helps 2. has ever had 3.is