Yellow = corrections

Blue = notes/suggestions

Individual sentences (IV)

That story doesn't add up. I'm sure you are lying.

How is the project coming on?
It's coming on right going well, our team came up with an effective solution to our technical problems.

I need to get around to going to the gym because I need to loose lose weight.

My interest in this job position felt fell off when I knew the salary. Suggested re-phrasing: I lost my interest in this job position when I learnt the salary.

My promotion felt fell through when I insulted my boss.

Did you make up your mind about the which college you will go next year?

Friends should make up if they argue.

I miss missed the bus and I couldn't make the exam. After talking to my teacher, we arranged a make-up exam tomorrow.

When I split it up in my screwed up at work, I gift gave a bottle of good wine to my boss to make it up to her.

Sometimes I mix up words in English.

I passed up the opportunity to marry an  a millionaire woman who I got along with.

I don't get my opinion across when I speak in English.

I can get by with my current salary. It is enough to make a living.

I don't need to buy a new car, I can get by on my current old one.

I can't go a day without eating some chocolate.

I have to hand in this statement to the CEO.

Do you feel like hanging out with my brother's friends?

Don’t jump to a conclusion if you don’t know all his reasons.
You jumped to a conclusion when you did it in that way. Now it is spoiled. This one is a bit strange but it's hard for me to provide suggestions as I'm not sure what you were trying to

The med kicks in one hour. This one also doesn't make a lot of sense

I try to keep up with computer science otherwise I won't be promoted.
I keep up with the new fashion tendencies.

When I arrive at home I like to kick back and unwind.

I meant to say look not lock.

Put your feelings aside. Your behavior isn't professional.
Put Pull yourself together. Your behavior isn't professional.