21— Anyone in mind for this position What about Jack— He may be a good friend，but business is businessHe is not______man forjob

What will the land be used for?— _____.[ ]

I promise that everything __________ clear about it next week

Several musicians say they consider it the greatestmusical composition ____written

Stephen Hawking believes that the earth is unlikely to be the only planet ________ life has developed gradually[ ]