Thank you very much. I forgot to include the following sentences.

1) Refer to situations in which robotic planes have proved to be useful.
2) Which scientific methods does forensic science adopt to catch potential criminals?
3) What/Which skills are forensic artists required to possess?
You have just been mugged while coming back home from school. Report the mugging to the police giving a descripion of your bag-snatcher.
4) I haven't made up my mind whether or not to forgive him. You are always sitting on the fence.
5) You were caught cheating. Now you'll have to face the music.

1) OK

2) Which scientific methods do forensic scientists adopt to catch potential criminals?

3) What skills are forensic scientists required to possess?
You have just been mugged while coming back home from school. Report the mugging to the police giving a description of the purse-snatcher.

4) OK

5) OK