1 . It wasn’t long ________ we were surrounded by enormous sand dunes towering above us on all sides. (用适当的词填空)

2 . A child and a man __________ (walk) on the beach when the child found a shell and held it to his ear. (所给词的适当形式填空)

3 . The show was about to begin __________ I took my place in the merry crowd. (用适当的词填空)

4 . Is it the first time in a year and a half that Sally ________ (make) such great progress? (所给词的适当形式填空)

5 . They had no choice but________ (obey) the rules of the company. (所给词的适当形式填空)

6 . There is no point in ______(compare) you with others all the time. Everyone is unique. (所给词的适当形式填空)

7 . I would appreciate ________ if goods could be delivered as soon as possible. （用适当的词填空）

8 . Food is ________ fundamental to man as the people are to the state. （用适当的词填空）

9 . Now, we scientists take it for ________(grant) that it is perfectly possible to live and not know.（所给词的适当形式填空）

10 . I was about to have a bath ________ I heard people screaming and dogs barking. （用适当的词填空）