______ does this scarf belong to— Let me see. Oh, it may be ______.

How was your trip to the park— It couldn’t be . We lost our way and it kept raining.

Mary went to the box office at lunch time, but all the tickets __________ out

I think he’s been drinking, _______ I’m not completelysure.

That scientist ________ work is successful has been made a model worker.