Question 1
The revised passage is:
Enrico had to work from home and take care of his two-year-old son. They walked over to the park, and while there, Enrico planned to make a call to his co-worker Paul. Helping his son on the playground slide, Enrico talked to Paul using a hands-free headset.
Question 2
Independent Clause:
- my friend Tim teaches at the local business college
- she drove from Washington, DC, to New York
Dependent Clause:
- since Adam likes to play soccer
- after I finish my homework
Question 3
The sentence that combines the two by replacing the first sentence with a prepositional phrase is:
The new program on the radio featured live performances by local musicians.
Question 4
We thought our invention would work but it failed. We will not rest until we figure out why.