1 . Mr. Alexander doesn’t just write for fun; ________ fact, writing is his bread and butter.   (用适当的词填空)

2 . Tom’s parents have full confidence ________ his devotion to protecting the environment. (用适当的词填空)

3 . Youngsters are encouraged to take ________ a sport and lead an active life. (用适当的词填空)

4 . Everyone has a desire ________ success, but not everyone has the courage and determination to pursue it. (用适当的词填空)

5 . Every time I go back to my hometown, I am surprised ________ its great changes. (用适当的词填空)

6 . She was highly self-critical and also found fault ______ her friends. (用适当的词填空)

7 . We apologize ______ the delay and regret any inconvenience it may have caused. (用适当的词填空)

8 . I was totally engaged ______ my study and seldom paid attention to my partner’s feelings. (用适当的词填空)

9 . Whenever a camera was pointed at her, Marilyn would instantly transform herself ________ an outstanding star. （用适当的词填空）

10 . She is engaged ________ Peter and they will get married next month. （用适当的词填空）