1 . A large percentage of her money ______ (be) spent on clothes. (所给词的适当形式填空)

2 . We have to achieve a balance ______ environmental protection and economic development. （用适当的词填空）

3 . I discovered that tai chi is deeply rooted in the Chinese philosophy of yin and yang, which __________ (believe) to form the unity of opposites. （所给词的适当形式填空）

4 . The boys look very happy because they are listening to the music that ________ (broadcast) on the radio. (所给词的适当形式填空)

5 . Look! Quantities of food he bought last night ________(be)on the table. （所给词的适当形式填空）

6 . The children had broken the bed by ________ (bounce) on it.(所给词的适当形式填空)

7 . ________ (bury) herself in the film, she didn’t know it was snowing outside. (所给词的适当形式填空)

8 . It will cost the city an estimated ￡2 million ________ (build) the hospital. (所给词的适当形式填空)

9 . The snow seemed ________(blow) from the top of the mountain. (所给词的适当形式填空)

10 . Among the painters who broke away from the traditional style of painting ________ (be) the Impressionists, who lived and worked in Paris.(所给词的适当形式填空)