Introductory it as Subject
The 'be' group
These verbs are concerned with what a situation seems or becomes. All the verbs in this group are link verbs (see Chapter 5).
be become remain seem
It is a crime to listen in on private conversations with scanners.
James had often said that while it was one thing to have children dependent upon you, it was intolerable to be materially dependent on them.
It remains our aim to maintain its real value over a run of years.