Do you come to school by yourself ______with a friend

Hey, Allan! Why do you look so upset— My cousin brother took my toy car away _______ asking me .

I _______ spend the Saturday afternoon with my old friends in the zoo, but they did not come

Where did you find your lost key?— Well, it was at the hotel we stayed.

I don’t like any humor in serious speech because I can’t think of any circumstance _______ this would be beneficial or useful.