If I pass my entrance exams, I will be the happiest man in the world. (E. pass/shall be)
This is a Type 1 conditional (real possibility). "Shall" is sometimes used with "I" and "we" in Type 1 conditionals, but "will" is more common.
We will come to see you next Sunday, if I get well. (D. will come/get)
Type 1 conditional.
What will you be doing if the train doesn't come in time? (E. will/do/doesn't come)
This is a question in the future continuous in the main clause and a Type 1 conditional in the if-clause.
If I have time, I will help you. (D. have/shall help)
Type 1 conditional. Again, "shall" is sometimes used with "I" and "we," but "will" is more common.
If you buy tickets, we shall visit Paris. (E. buy/shall visit)
Type 1 conditional.
Tomorrow if the weather is fine, we shall get out of the town for hours. (A. is/shall get)
Type 1 conditional.
If you are free, watch the film they are showing on TV. (C. are showing)
This is a zero conditional (a fact). The film is currently being shown.