1 and 2 are both correct; 1 is more commonly used.
3. What kinds of health problems dothe people in the pictures have?
Look at the person in Picture One. He is holding a measuring tape. Doesn't he look heavy? He needs to be on a diet. How can we help him? Find the solution on the Internet. Ask if your friend has a problem and give a suitable solution.
Only that verb needed correcting; everything else reads well.
1. Do first things first.
2. Do the first things first.
(Which one is right?)
3. What kinds of health problems does the people in the pictures have?
Look at the person in Picture One. He is holding a measuring tape. Doesn't he look heavy? He needs to be on a diet. How can we help him? Find the solution on the Internet. Ask if your friend has a problem and give a suitable solution. (Is this passage grammatical? Would you like to check it? Thank you.)
2 answers
"do" and "the" should have a space between them! =)