1. I ............ gardening all day.

worked like a dog

let sleeping dogs lie

dog tired

dog with a bone

2. What's James so happy about? He looks like ............

dog with a bone

a dog with two tails

dog tired

worked like a dog

3. She can't stop talking about learning English - she's like ............

a sleeping dog

a dog with a bone

a dog with two tails

dog tired

4. I'm ............ after running the marathon.

a sleeping dog

dog-tired

dog-eat-dog

a dog with a bone

5. I don't like talking about argument we had, it's better to ............

dog-eat-dog

let sleeping dogs lie

dog-tired

a sleeping dog

6. Be strong, it's a ............ world.

dog-tired

dog-eat-dog

work like a dog

let sleeping dogs lie