About COLLOCATIONS.

Some people can [ HOLD/keep/maintain] their breath under water for a long time.

Footballers are at a risk of injury, and often [bend/curl/TWIST] their ankle or knee.

Athletes can [pull/drag/haul] a muscle if they don't warm up properly before they run.
(I have no idea with this sentence)

PULL is the correct word to use here.

Scientists can [ get/MAKE/have] a good living, specially if thet write books.

People[HACK/look/probe] into computers to get personal information illegally.

If you use the Internet a lot, you should always [book/BOOKMARK/note] your favourite web pages.

It's important to [PRIORITISE/rank/order] your work so that you can make the best use of your time. (Prioritise sounds better to me but also does Rank...)

You are right: PRIORITISE is best here.

Scientists [CONDUCT/control/check] experiments on animals before trying new drugs on humans.

The play was [UTTERLY/mainly] hilarious -I couldn't stop laughing.

She was [BITTERLY/completely] disappointed with his reaction.

The project was [ HUGELY/greatly] successful and changed the company's approach.

He felt [totally/DEEPLY] grateful for having been given the opportunity.

He was [ABSOLUTELY/enormously] impressed by her knowledge of technology.

She was [COMPLETELY/exactly] absorbed in her work and hated taking holidays.

Very good writing!! :-)