完形填空。 A true friend is always helpful. I didn't believe it. __1__ one thing happened (发生) to me when I was in Grade 7. Li Jie was one of my classmates. He and I were also neighbors. He always listened to his mother __2__. I didn't like listening to my mother. I didn't think it was necessary for__3__ to teach me anything. Li Jie knew all about that but he said __4__ to me. One weekend, Li Jie __5__ me to watch a movie. I liked __6__ very much so I went to the cinema (电影院)__7__ him happily. The movie was__8__ the love between a mother and a son. After__9__ it, I began to know how great the love of the mother was. I felt __10__ that I didn't listen to my mother __11__ . I decided to think more about my mother __12__ about myself. After I told that to him, Li Jie smiled and said, "It's really __13__ for you to watch such a movie. That was a good choice (选择) for both you and me." Suddenly, I knew __14__ he invited me to watch the movie. Just at that time, I knew a true friend is always__15__ . ( )1. A. when ( )2. A. but ( )3. A. she ( )4. A. something ( )5. A. invited ( )6. A. them ( )7. A. and ( )8. A. of ( )9. A. reading ( )10. A. sorry ( )11. A. again ( )12. A. and ( )13. A. bad ( )14. A. what ( )15. A. helpful B. after B. and B. me B. nothing B. take B. him B. with B. in B. read B. happy B. after B. than B. interesting B. when B. important C. if C. so C. her C. anything C. helped C. movies C. of C. for C. watching C. sad C. before C. or C. exciting C. why C. popular D. until D. or D. us D. everything D. answered D. my mother D. to D. about D. watch D. interested D. while D. with D. necessary D. who D. kind