1 . The film you see on the screen is the product of a huge amount of hard work, most of________ takes place behind the scenes. （用适当的词填空）

2 . You can find whatever you need at the shopping Centre, ___________is always busy at the weekend. （用适当的词填空）

3 . It’s reported that two schools, both of __________ are being built in my hometown, will open next year. (用适当的词填空)

4 . My father bought me several books, none of___________ was interesting. （用适当的词填空）

5 . It is the third time that she has won the race, ______ has surprised us all. (用适当的词填空)

6 . She and her family bicycle to work,___________helps them keep fit. （用适当的单词填空）