f. Complete the sentences with an appropriate idiom.
1. A: John promised to paint the house for me last Saturday, but he didn't show up.
B: Don't believe in what he says! John is ... .
2. Janet is always there when I need her. She's definitely not a ... 3. Don't spend all your money. Save some ....
4. A: Why didn't you go to work yesterday?
B: I was feeling a bit ... .
5. A: Are you going to the concert tonight?
B: I wish I could, but I have to work overtime. I'm ....
6. Hana is gifted at learning languages. Only after six months in Toronto, she is quite fluent in English.
7. Learning English was really ... for her.​

a fair-weather friend
under the weather
a snowed under
a breeze
to save something for rainy day
full of hot air