Writeacher,can you please check if everything is correct? Thank you.
1) Can you give me a hand to finish this exercise, please?
2) The answer to your question is on he tip of my tongue.
3) Behave yourself! Don't shrug your shoulders!
4) I can't see at a distance. I think you should goo to the eye specialist and have your eyes tested.
5) I've got a terrible stomachache. I think you should take sme bicarb to help your digestion.
He's got a bad cold. He is always blowing his nose and can't breathe properly.
2. ... on the tip ...
4. ... go ...
5. ... stomach ache ... some bicarb ...
Everything else is fine.