Question

(adding main clause to the sentence) as soon as the bell was rung​

Answer 1

You could come up with any independent clause and add it to this sentence.
For example, “The kids sprinted out the door”.
You can either add this to the front or end of the sentence.
“The kids sprinted out of the door as soon as the bell was rung”
“As soon as the bell was rung, the kids sprinted out of the door.”
Make sure to use a comma to separate the clauses if you’re going to put the main clause at the end of the sentence.

Hope this helped