Question

Why was Gulliver frighting when he woke up

Answer 1

This is because he wakes up, he finds that his arms, legs, and long hair have been tied to the ground with pieces of thread. I would have been frightened too!
 
Your welcome,
Contact me for any more help!

~明るい光

Answer 2

$\huge\tt\purple\star{Answer:}$

This is because he woke up, he finds that his arms, legs, and long hair have been tied to the ground with pieces of thread.