Toni Morrison, Nobel Prize-winning American writer, says if there’s a book you really want to read, but it ______ yet, then you must write it.
The WTO urged that all the countries ________ measures to prevent swine flu spreading.
Frank put the medicine in a top drawer to make sure it would not be ______ to the kids.
Nowadays people sometimes separate their waste to make it easier for it _______.
Life is like a long race ________ we compete with others to go beyond ourselves.
You must be ________ that what you are doing is quite illegal.