1 . I can’t believe the ____(one) week is coming to an end. (所给词的适当形式填空)

2 . Biological systems have been doing this for __________ (billion) of years. (所给词的适当形式填空)

3 . It will be my______ (fifteen) birthday next Sunday. (所给词的适当形式填空)

4 . Two________ (three) of the people who lived there were dead or injured. Thousands of children’ were left without parents. (所给词的适当形式填空)

5 . In his _______(thirtieth), he was quite thin and pale and he had red bushy hair. (所给词的适当形式填空)

6 . The books on food are on the ________ (five) shelf. (所给词的适当形式填空)

7 . Mr Zhang is the________ (three) president of this school. (所给词的适当形式填空)

8 . There are a ________ (vary)of books in the bookstore for us to choose from, like history books, science books, literary books and so on. (所给词的适当形式填空)

9 . Every year, ________(million) of birds come here for winter. (所给词的适当形式填空)

10 . On the__________(one) day of school, Miss Yan gave a short speech about the importance of setting goals. （所给词的适当形式填空）