Complete the idioms using an appropriate word from the box

Exercise 10. Complete the idioms using an appropriate word from the box.
dogs
cows
goat
bear
pig
elephant
cat
rat
horse
fish
1. I felt like a ______ in the middle caught between the two rivals.
2. My sister drinks like a ______. She got through two bottles of wine last night.
3. The extension turned out to be a white ______as nobody needed the extra space.
4. You’re flogging a dead ______trying to persuade me to come with you. You’ll never get me to change my mind.
5. I wouldn’t mind lending him money but what gets my ______is that he never pays me back.
6. Karen is like a ______with a sore head this morning. What has made her so bad tempered?
7. The man told me he had come to mend the photocopier but I began to smell a ______when I found him in the director’s office.
8. The deal was supposed to be secret. Who let the ______out of the bag?
9. Since the new manager took over the business is really going to the ______. The service is not up to standard and the staff are inexperienced.
10. I could stay and talk to you till the ______come home, but I really must leave now.