________ is the most important for him is not his job, but his family.
A．It B．As
C．What D．That
________ she was invited to the ball made her very happy.
A．Whether B．That
C．Because D．What
Mary is a humorous and warmhearted woman and that is ________ she is a most popular person in her community.
A．whether B．because
C．how D．why
The organizers promise ________ wins the first prize a chance to go abroad.
A．who B．whom
C．whoever D．whomever
Besides the content of a book, ________ the editor also cares about is the number of readers.
A．who B．why
C．how D．what
—Can you tell me if Tom has finished his homework?
—I've no idea. He ________ it this morning.
A．has being doing B．had done
C．is doing D．was doing
