1 . Bob had seen the film before. That was ______ he did not see it yesterday. (用适当的词填空)

2 . Bruce did not watch the game last night. That was ______ he had to help his little sister with her homework. (用适当的词填空)

4 . In the novel, this is___________Jia Baoyu and his female cousins lived. （用适当的词填空）

5 . Whether the flight to Shanghai will be delayed is ______ I’m especially worried about.(用适当的词填空)

6 . The reason why he was late was _________ his car broke down on the way. （用适当的词填空）

7 . Li Ming is my friend ________ that’s ________ I have offered to help. (用适当的词填空)

8 . The reason ________ he was fired is ________ he is always lying to others. (用适当的词填空)

9 . He was not admitted into a key university because he didn’t work hard enough.
→________________ (用定语从句升级)

10 . That was ________ none of the children thought it unusual that David had decided to join the cross­country team. (用适当的词填空)