________the police thought he was the most likely one，since they had no exact proof about it，they could not arrest him.[ ]

Tom has agreed to let me use his computer to surf the Internet, and _______ I’m treating him to a good dinner at the newly-built restaurant just around the corner.

Will you go to Betty’s birthday party?—No, _______invited

Lily and her sister look the same. I can’t tell one from_______.

Nancy spent half an hour ________ the piano every day.