Написать 4 предложения с decide(решать) и 4 предложения с solve(проблема) в разных временах

Decide
1. I have decided to stay home tonight
2. Mary'll need to decide her profession soon.
3. Detective Smith deciding who is the killer.
4. That was so hard to decide.
solve /кстати,"solve" это не "проблема",а "решать"/
1. Detective Smith has solved the crime last friday.
2. Don't worry, I'll solve this problem by myself.
3. Jane is solving that really confusing situation right now.
4. Gregor must solve this offence as quickly as he can.