Please fill the gaps with suitable words:
1. The brothers will ....... school both together at the end of this year.
(a) end (b) ending (c) finish (d) finishes
2. Sadly their marriage of 25 years ....... in divorce.
(a) ends (b) ended (c) finishes (d) finished
3. I've written practically the whole book except for the last part and I just don't know how to ....... the story.
(a) end (b) ending (c) finish (d) finishing