We need to know what the language is, all languages have different syntax, I think you might have been.. not listening in class if your given this and don't know where to begin.
However to address the list the first thing to try is searching the keywords in the statements, for example 'Real' is the data type of the statement, a quick google will tell you it is used "in a computer program to represent an approximation of a real number(real number is something like PI which needs an approximation to be used)". Therefore in 1 it is incorrect to make a real value a string of text.
Assignment statements always go like so
datatype variablename = value
Again I say you must not have been listening because this sounds like a quiz to content recently taught but tell us the language and I guess we can explain why for each line I have no lectures, my college does not offer in class programming classes, so I am forced to take it online in an environment that is extremely hard to learn. Literally forced, this class is required before I begin any others.