Подчеркните сказуемое, обусловьте его залог.1.The new device had been tested in

Подчеркните сказуемое, обусловьте его залог.

1.The new device had been tested in action by the end of the last month.

2. Rails were. produced at a special electric welding shop.

3. This experimental work will have been completed by the beginning of the year.
4. The Sapsan trains fully comply with the Russian Federation safety standards.