If we _______ adequate preparations, the conference wouldn’t have been so successful.
Energy, passion and a burning desire are, you see, ________ true learning takes.
________ is the most important for him is not his job, but his family.
Mary is a humorous and warmhearted woman and that is ________ she is a most popular person in her community.
The organizers promise ________ wins the first prize a chance to go abroad.
Besides the content of a book, ________ the editor also cares about is the number of readers.