Question

i heard that the chairman------------- the company

Answer 1

According to the sentence OF should be there but the sentence is incomplete.

Answer 2

I heard that the chairman of the company.

Explanation:

Here, the word ‘of’ (moreover to a preposition) is expressed to connect the phrase. Just competing with completing the phrase won’t help make a proper sentence. One needs to know, how the phrases are made, with appropriate steps. The sounding of the sentence is much important than just completing it with any preposition or word.

In the given example, ‘I heard that the chairman the company’, makes no sense without the appropriate preposition. So we used, “I heard that the chairman of the company”, ‘of’ as ask the question, ‘The chairman of which company?’, we get the answer while framing this question, that is ‘of’.

Hence, I heard the chairman of the company.