Нужно только проверить английский, кто сможет?

Определите видо-временную форму и залог глагола-сказуемого.
Methazid is
used in all forms of pulmonary tuberculosis in children and adults. - Present Cont., passive.

2.
People have cultivated corn for many
thousands of years. - Present Simple, active.

3.
D.I. Mendeleev arranged elements
according to a definite system. - Past Simple, active.

4.
They will be studying these elements
all day long tomorrow. - Future Cont., active.

5.
N.D. Zelinsky has elaborated new
methods for synthesizing a large number of

new compounds. - Past Simple, active.