Answer:
The end of a complete sentence should be marked by a period, a question mark, or an exclamation point. If a sentence is not complete and it is terminated by a period, we have a sentence fragment as in the sentence below.
Explanation:
1) Which he is being selected- is definite.
2) Mona wants to-which she wants to win first price for.
3) Is this the way- which to treat an old friend?
4) Even though in spite of being old- he is very active.
5) Which at sunrise- the farmer went to his field.
