Help me out with these sentence transformations!

Hi, everyone! I'm new here, just joined in a few minutes ago.

I have a written test coming (it's on Friday actually!) and would really like someone to check these sentences taken from a sample paper that's supposedly at a CPE level, but I don't think that's accurate, I'd say CAE at most.

They're quite easy, I think, but I'm just getting more and more doubtful as the day gets closer.

So here they go:

1. I think it would have been better if you hadn't called her. (I'd rather...)

I'd rather you hadn't called her.

2. She is proud of being such a good cook. (She prides...)

She prides on being such a good cook.

She prides upon being such a good cook.

She prides herself on being such a good cook.

She prides herself upon being such a good cook.

3. As it gets hotter, I drink more water (The... drink.)

The hotter it gets, the more water I drink.

The hotter it gets, the more I drink.

4. I didn't move to that town because no one offered me a job. (I... if...)

I would have moved to that town if someone had offered me a job.



I would have moved to that town if I had been offered a job.



And this is the one that confuses me the most:

5. He acts without considering the possible risks involved, which is why he didn't get promoted. (We're... impulsive... promoted)

I just don't know what I'm supposed to write here... maybe something like:



We're certain his being impulsive is the reason why he didn't get promoted.

But it doesn't make much sense, does it?

Please correct any mistakes you see - it's been ages since I last practised my writing!!!

Thanks in advance!