Английский язык

Здравствуйте.Не могли бы помочь с определением видов конструкций
1. Having tested the new type of hoisting crane, the engineer offered some recommendations as to its use- having tested конструкция «Объектный падеж с причастием I»

2. With a minimum of changes having taken place in the post-tensioning system, one can be sure of obtaining a post-tensioned crack-free panel- having taken конструкция «Объектный падеж с причастием I»
3. The experiment having been finished the students left the laboratory- having been finished-затрудняюсь

Выпишите глаголы-сказуемые, определите их видо-временную форму и залог.
1.Electricity is used to produce heat.
2.Today plastics are being applied for car bodies.
3.The electric cars will be widely used in future.
4.He worked at the plant all his life.
5.The device is being tested now.
6.Engineering progress opens up wide prospects before man.
7.The alloys were experimented upon in our lab.
8.Having been repaired,the engine began operating better.
9.I had been tested the device for two hours when you came.
10.I have never been there before.

Помогите пожалуйста!!!!Заранее спасибо!!
определите в каждом из них видовременную форму и залог глагола — сказуемого. Переведите предложения на русский язык.
1. Nearly all the American wheat crop-is sown with a drill.
2. The rate of seeding for wheat in the western part of the USA does not depend on soil type.
3. Tractor-operated grain drills are divided into two types.
4. Fertilizer grain drills are used for planting both seed and fertilizer in a single Operation.
5. Furrow openers are attached to the frame of the drills.