_____ the front door _____, he had to enter the room through the back door.
Would you please ______ the paper for me and see if there are any obvious mistakes?
— The food here is nice enough.— My friend ______ me a right place.
______ the police thought he was the most likely one, since they had no exact proof about it, they could not arrest him.
Either you or one of your students ______ to attend the meeting that is due tomorrow.
You and I could hardly work together, _____ ?