Answer:
it might be B,C,D doesnt tell me
Explanation:
sorry for not a straight answer but all i know it isnt A
I think the common noun is family and circus.
Answer:
<em>Spectat</em><em>ors</em><em> </em><em>thronge</em><em>d</em><em> </em><em>the</em><em> </em><em>stree</em><em>ts</em>
In the sentence, "Well, that concludes another very fine experiment", the interjection word would be Well because it shows their expression/feelings as they say it. It could be like, "Oh well" type of way of saying it, or "well this has been fun" type of way.
I know this because interjection is a word that expresses emotion or feelings and is mostly/usually used in the beginning of a sentence.
You're welcome in advanced! I truly hope this helped!
P.S. I put this in my own words.