Задание 9Выберите нужную форму глагола to have.1

Задание 9Выберите нужную форму глагола to have.1.Our laboratory (to have, has, had) a new and effective equipment.2.Rutherford (to have, has, had) many pupils, and Russian scientists P.Kapitza and Y.Khariton were among them.3. The Table of Elements (to have, has, had) vertical groups and horizontal periods.