a) The experimental battery car has made at most 60 km without recharging of the batteries.
Глагол сказуемое has made - past perfect, 3-е лицо (it), ед. ч.
Экспериментальная аккумуляторная машина не более 60 км без подзарядки аккумуляторов.
b) People knew that the electric current was the motion of electrons through an electric conductor.
Глагол сказуемое knew - past simple, 3-е лицо (they), мн. ч.
was - past simple, 3-е лицо (it), ед. ч.
Люди знали, что электрический ток-это движение электронов по электрическому проводнику.
c) Now the workers are laying down the track.
Глагол сказуемое are laying down - present continuous, 3-е лицо (they), мн. ч.
Сейчас рабочие прокладывают путь.
a) The experimental battery car has made at most 60 km without recharging of the batteries.
Глагол сказуемое has made - past perfect, 3-е лицо (it), ед. ч.
Экспериментальная аккумуляторная машина не более 60 км без подзарядки аккумуляторов.
b) People knew that the electric current was the motion of electrons through an electric conductor.
Глагол сказуемое knew - past simple, 3-е лицо (they), мн. ч.
was - past simple, 3-е лицо (it), ед. ч.
Люди знали, что электрический ток-это движение электронов по электрическому проводнику.
c) Now the workers are laying down the track.
Глагол сказуемое are laying down - present continuous, 3-е лицо (they), мн. ч.
Сейчас рабочие прокладывают путь.
Pupils should not stand up when teachers come in.
Pupils should not sit while answering.
Pupils should not leave the classroom when they want.
Pupils should not come to school in boots and shoes that are unclean.
Pupils should not wear school uniforms.
Pupils should wear almost any clothes they like.
Pupils should be quiet during the lessons.
Pupils should have some tests.
Pupils should play active games during breaks.
Pupils should bring mobile phones to school, however, should not use them during lessons.
Pupils should eat whenever they are hungry.