Gap-filling exercise: British television is the big success story of post-war...

The task is to fill in each numbered blanks with one suitable word.
And the words in red are my own answers.
British television is the big success story of post-war years. Little [color=red]rather (1) than a limited experiment before the war, it blossomed in [color=red]several (2) years following 1945. [color=red]In (3) 1955, commercial television began. To day, 90% of the population have a television in their [color=red]houses (4) In 1960, a committee of enquiry was [color=red]set (5) up, [color=red]by (6) the chairmanship of Sir Harry Pilkington, to investigate the workings of broadcasting. The Pilkington Report, published in 1962, had _____ (7) to say: “Television has been [color=red]well (8) a mirror of society, but the metaphor, [color=red]most (9) striking, wholly misses the major issue of the responsibility [color=red]of (10) the broadcasting authorities. For, if we consider the first aspect of this responsibility, what is the [color=red]right (11) to reflect? Is it to reflect the best or the worst [color=red]of (12) us? One cannot escape the question by saying that it must do both; one must ask then [color=red]how (13) it is to present the best and the worst with complete indifference and [color=red]without (14) comment. Television [color=red]will (15) not, and cannot, merely reflect the moral standards of society, it must affect [color=red]these (16) either by changing or by reinforcing them.”
All broadcasting, [color=red]including (17) television, must be ready and anxious to experiment, to show [color=red]things (18) new and unusual, to give hearing [color=red]from (19) dissent. Here, broadcasting must be most willing to make mistakes; for if it does not, it will [color=red]make (20) no discoveries.

(1) should be “more”
(2) the
(4) household
(6) under
(7) this
I don’t get the smiling face and kinda got lost after that.

For 4, I’d say “homes.” In any case, it must be plural.
I’m mystified at the smiley face too.

Oops, I typed (8 ) and (18 ) but it became (8) and (18)
And thank two of you so much for your help