The answer is either expansive or respective if I'm not mistaken. I hope this helps! :)
Answer:
<u>b) Before walked add the subject: My friends and I</u>
Explanation:
Adding the subject: My friends and I forms a complete sentence as read like this: My friends and I walked along Sixth Street, looked up, and saw a hot-air balloon.
Answer:
It's about a nice bond between 2 characters.
Answer: past tense endow or provide with a quality or ability.
Explanation: "our sight would be endued with a far greater sharpness"