It was when searching for the lost book whose cover was missing ______ a secret letter addressed to his mother.

ncers, all of _______ masks came off suddenly,gave us a great surprise

He is strict with himself in the work, so the manager ____ him a lot.

I ______, no, I am quite certain, that he is unwelcome in the neighborhood.

Excuse me， can you tell me the way to the hospital— along this street. The hospital is the white building at the street corner.