Sentence 1: I had to rescue my cat from the tree. 
 Sentence 3: After climbing several steps, I held him 
 Sentence 4:  A few seconds later, the ladder slipped from the ground 
 Sentence 5:  I ended up landing on the ground, injured 
 Option 1: Since he was all the way on the top, I had to use a ladder. 
 Option 2: She was good at climbing, but she just was scared of coming down due to the ferocity of the wind moving the tree around.