1. The sanitary engineer is concerned with hydrology. - Present Simple Passive
to concern
2. Different systems of water filters are used in present day. - Present Simple Passive
to use
3. Water finds its way to the rivers. - Present Simple Active
to find
4. Ocean water contains salt and other mineral materials. - Present Simple Active
to contain
5. The earliest written records of water purification date to 2 000 B. C. - Present Simple Active
to date
6. The modern recreation center has been erected in the center of Moscow. - Present Perfect Passive
to erect
Поделитесь своими знаниями, ответьте на вопрос:
Определите видо-временную форму глагола и задайте 4 типа вопросов к предложению: it is raining outside and i don't want to go out.
Has a new shop recently opened outside the town?
A new shop has recently opened outside the town, hasn't it?
Where has a new shop recetnly opened?
Has a new shop recently opened outside or inside the town?