1 . We said thanks to Mr. Wu, without ________we could’ t achieve our goals. （用适当的词填空）

2 . It’s one of the few countries___________ people drive on the left. (用适当的词填空)

3 . If this works, there may come a time ________the number of monarch butterflies increases once again. (用适当的词填空)

4 . ________ is often the case, we have worked out the production plan.

5 . Who is the man ________is waiting at the school gate? （用适当的词填空）

6 . We are facing the same problems ________we did years ago. (用适当的词填空)

7 . Tom explained to his teacher the reason ________he came late. （用适当的词填空）

8 . I grew up in the small village ________I was born. （用适当的词填空）

9 . Li Hua still remembered the moment ________he became a student of Beijing University. (用适当的词填空)

10 . Mary was much kinder to Jack than she was to the others, ________, of course, made all the others upset. （用适当的词填空）