Answer:
Our <u>class</u> gave a special show that was a huge success. is a collective noun
As the <u>orchestra</u> took <u>their</u> seats, there was silence is also a collecive noun
I think this means:
If it's possible for a human being to do something, don't just say that he can't, just let him try, give him a chance.
<span>As the door slowly creaked open, Jessie peered carefully into the vast darkness, holding her breath.
The "slowness" of the creaking door and the "vast darkness" add a weight to the sentence unlike the others. </span>