I did not know that he was ill. The sentence has

Noun Clause
Adjective Clause
Adverb Clause
No Clause


Answer :

Answer:

Noun clause

Explanation:

Some of the words that introduce a noun clause are:

  • Who
  • Whom
  • Whose
  • Which
  • Whether
  • What
  • When
  • That
  • If

I did not know THAT he was ill. --> Noun clause