1.

Look, at least I asked you if I could marry her.
So, you're happy for me to marry your daughter?
I guess that means you don't want me in the family.

Correct answer is: B
B is ironical since a happy father would not usually want to shoot his future son-in-law.

2.

Uncle Hector copes well with his life of terrible poverty..
Croesus was just slightly richer than my uncle Hector.
Uncle Hector does not worry where his next meal is coming from.

Correct answer is: A
Uncle Henry is obviously very rich so the use of 'terrible poverty' in A is ironic.

3.

You may get better by yourself before medical help arrives.
The emergency services here are not the fastest.
If there's an accident our doctor will be here in a flash.

Correct answer is: C
Unless the horse is called 'flash' this sentence is ironic.

4.

No, we do not need a 'Don't feed the shark' sign.
It's not a good idea to swim today.
If you fall overboard, at least the water will be warm.

Correct answer is: C
Sentence C is ironic because it suggests that the problem is water temperature, not hungry sharks.

5.

His wonderful sermons last hours and hours and hours.
I wonder if the Reverend ever runs out of breath.
Surely he has to stop before dinner time?

Correct answer is: A
The clue that A is ironic is 'hours and hours and hours' means 'too long'.

6.

You shouldn't have. No, seriously. You shouldn't have.
Thanks. I shall wear this when I'm gardening.
Yes, it's nice. You can take it off now.

Correct answer is: B
You don't wear your best jewellery while gardening, so this is an ironic comment on the quality.

7.

It's the wings. They make the costume so convincing.
Not all Halloween costumes suit everyone.
Your daughter still won't think you are the tooth fairy.

Correct answer is: A
Even with the wings, this is not a convincing fairy, so A is ironic.

8.

Scarface's last bank robbery didn't go to plan
Scarface was a good bank robber. The guards were better.
So the bank had armed guards? Surprising, that.

Correct answer is: C
The speaker is not surprised that the bank was guarded, so this usage is ironic.