Obligate - you feel as if you should do something but you don't have to. So "I feel obligated to help." Mandatory and compulsory are the same meaning. You are required to do something or have a particular thing. "It is mandatory to have a drivers licence to drive a car." Binding is an agreement or deal have you made with someone that will ensure that nobody goes back on the agreement. "He signed the contract to purchase the house as did the seller. The contract was now binding." Hope that helps. Some interesting words 😃.

I have heard "I'm about to pop" quite often.

It would sound better to say success is in the eye of the beholder. It still would mean what you are wanting to say.

Pressed her back is would to have her back right up against something. The word "simmered" is to describe the lights on the road, but personally I think maybe the word is incorrect. Simmer is when something is boiling at a medium pace and is often talked about when cooking. So to me, it doesnt describe the lights down the road well. Now I think the passage should read "shimmered" which means a visual image is moving around almost like in a wave type of shape. Lights on a road often would give that appearance. So "a few lights shimmered down the road" suddenly makes a lot more sense 😃.

In everyday speaking, people generally would use it.

I am very suprised the words "just now" were used in this sentence. You would use just now in a sentence like "I am coming to school just now" which means I will be there in a short while. If the sentence was something like "Sophie was looking for a job just now in the newspaper" it would sound fine but the way the sentence is now doesn't make sense. Hope that helps.

My school is placed in Moscow. It’s a co-educational state school. Almost everyone lives near to the school. Some of them get there by a public bus. There are lots of rules, such as: Students must attend every lesson and get to classes in time. Also they have to do the homework. After the 11th grade students get a school diploma. After all, everyone chooses what to do next. Kids studying here love and appreciate the school and so do I.

Stay health is not right.