---- Dad, ________my pencil case in the drawer? ----Sorry, I _______ know.A. is; am not B. do; don’t C. is; don’t
Experts believe________people can waste less food by shopping only when it is necessary.
________makes the book so extraordinary is the creative imagination of the writer.
Police have found________appears to be the lost ancient statue.
He wrote a letter________he explained what had happened in the accident.
Nowadays people are more concerned about the environment________they live.