Prepositional Phrases - In, On, Out and Under (19)

He didn't tell you he was a policeman because he is working ......... cover. He needed you to arrest him so the drug dealers wouldn't find out he was a police officer.
in
on
out
under

I am to be your mentor for the next six months. If you are ever ......... doubt about something, feel free to ask me and I will help as much as I can.
in
on
out
under

Hey! You knocked over my coffee ......... purpose! That was not an accident. Why did you do that?
in
on
out
under

I understand you have been feeling ......... of sorts lately due to the accident. I know how tough it can be to lose a spouse. I just wanted to let you know your boss understands and will give you more time off if you need it.
in
on
out
under

I am pleased to announce that the deal has finally gone through. As you know, this deal has been ......... the making for almost six months now. Thank you all for your hard work on this.
in
on
out
under

It is alright that you did it this way. However, ......... the future, we will need you to document the case history in your report instead of referring the reader to the case history forms.
in
on
out
under

If you mess up again, Sergeant, I will put you back ......... patrol with the brand-new police officers.
in
on
out
under

Many employees refuse to blow the whistle on the company they work for ......... of fear of reprisal.
in
on
out
under

My heart goes out to people in war-torn countries who live ......... constant fear of death.
in
on
out
under

It's supposed to be a clear and beautiful evening tonight. We don't need a tent. We can just sleep ......... the stars.
in
on
out
under