—I’m going to Hawaii with my aunt this month for my vacation.—_______
I think your advice is of great ________ to me and it’s _______.
-- Look at that girl. Is it Susan? --No, it _______ be her. She has gone back to her home town .
________ great progress he has made this term ! He feels _______ .
To live a low-carbon life , we must try to save _____ energy and produce ____ carbon .
--Which do you prefer, Simon ,tea or milk ? -- ______ is OK . I don't mind .