-Jeffery seems to go without proper food and sleep for days.-Leave him alone.That's________he reacts to a lost love.
I was just about to go to bed last night ______ the telephone rang.
This is the knife _____ I cut apples yesterday.
E-mail, as well as telephones, _____ an important part in daily communication.
The girl said she would buy a gift for her sister with the _____ money.
If you are _____ about Australian cities, just read the book written by Dr Johnson.