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.
1 had been tested - Past Perfect Passive2 were produced - Past Simple Passive3 will have been completed - Future Perfect Passive4 comply - Present Simple Active