1 . The Nobel Prize in literature is awarded ________ (annual) to an author who has produced the most outstanding work in the field of literature. (所给词的适当形式填空)

2 . The industry has grown 27% _______(annual) over the past 10 years. （所给词的适当形式填空）

3 . There are three books I reread________(annual). (所给词的适当形式填空)

4 . For the Armstrongs, traveling abroad costs an arm and a leg ________ (annual).   (所给词的适当形式填空)

5 . If both sides agree, the contract can be renewed ________ (annual)．（所给词的适当形式填空）