1 . He is no longer __________ he used to be. (用适当的词填空)

2 . The problem is ________ you can arrive at the airport in time or not. (用适当的词填空)

3 . Don’t be sad. The most important thing is __________ we must learn from our mistakes and move on. (用适当的词填空)

4 . The reason for his absence is __________ he hasn’t been informed. (用适当的词填空)

5 . The debate between them was ____________ it was worthwhile to afford the extra expense of hiring an expensive apartment.（用适当的词填空）

6 . You are saying everyone should take equal responsibility, and that is________ I disagree. (用适当的词填空)

7 . A situation where a person is unable to remember past events is ________ is generally called amnesia (健忘症). (用适当的词填空)

9 . Joy is very selfish and unkind; that’s __________ I am unwilling to make friends with her. (用适当的词填空)

10 . I go over light-footed, pick up the kitten and put her outside the door, and the sparrow remains __________ it is. (用适当的词填空)