Подчеркните Глагол-сказуемое и определите его видовременную форму и залог.

Глагол-сказуемое и определите его видовременную форму и залог.
1.а) The work of the farmers is steadily increasing agricultural production and
adding to the economic power of the country.б) Proper use of fertilizers has influenced the yield of cereals.2.а) At the last lecture on Agronomy the students were shown a number of
crops.б) Agricultural foodstuffs and raw material are purchased abroad every year.