We have a lovely room. It’s one of in the hotel.
-- 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 .
It’s very kind _____you to help me with my lessons. It is hard ____ me to learn them well .