Answer:
Carla is as sharp as a tack
The house was pitch black like a cave
The childs cheeks were red like a rose
the wall is as thick as a brick
Alison runs like a cheetah
Ben is as violent as a lion
Ramon is strong like an ox
Her hands were as cold as ice
The puppy swam like a seal
Explanation:
I don't know if you wanted me to change them into correct similes but here you go.
Answer: 1. back, 2. up, 3. about, 4. in, 5. round, 6. out, 7. back, 8. round, 9. up, 10. out, 11. in.
Explanation: hope this helps :)
The heart is not actually running