－Is that Mary?－No, it _______be her. She has gone to Tokyo. 

--- Do you have _________ paper, Millie ? I want to write a letter.--- Sorry, I don’t have          .

–Have you decided where to spend your summer holiday?--Not yet. We _____ go to Hong Kong.

—Look! That man looks like Mr．Brown．—It ________ be him, for I know he is at home．

I ___________ through that bitter period without your generous help.