Introductory it as Subject
6.3 it V adj whThe verb is followed by an adjective group and a wh-clause. The adjective group is the Complement.
|it||Verb group||adjective group||wh-clause|
|It||is not||clear||who will get the money.|
|It||remains||uncertain||how many snipers were involved.|
These verbs are concerned with what a situation or question is, seems, or becomes. All the verbs in this group are link verbs (see Chapter 5).
appear be become remain seem
It appeared unclear whether the council would do much for the rebels beyond expressing outrage.
In the end the government did raise taxes as it became clear how much money needed to be spent in the East.