If we go on using energy so wastefully , are that our oil wells will be dried up before new energy sources can be found to replace oil .
Late in the afternoon, they arrived at ______ small village ______ north of the West Hill.
Mr. Smith, _____ of the ______ speech, started to read a novel.
---The light in the office is still on. --- Oh, I forgot _______.
. Rather than _______ on a crowded bus, I always prefer _____ an electric bicycle.
Tony, my best friend, has done _______ he can to help me out of trouble.