Read the sentences and complete the idioms with suitable words.

Write one word in each gap.

There's something strange. Don't you think we might have barked up the wrong [ ]?

There's no surprise Chis is over the [ ]. He's been waiting for this trip for months!

When I saw Diana with her new boyfriend, I was ready to go through the [ ]!

Why do you have such a [ ] face? What has happened to you?