— Why didn't you stop her going swimming alone? — She had left the room _____ I had time to do it.
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.