六、语法填空。
Lily is from a rich family. 29. her parents are so busy that they have no time to be with her. So Lily spends much time 30. the internet. As a result, she has made a lot of 31. (friend) online.
She has 32. very special friend on QQ. 33. (he) name is Jack. He is eighteen years old and 34. (live) in New York. There is much in common between Jack and Lily, such as the same interest in jazz. So they often spend hours 35. (chat) on QQ.
Last year, Lily went to New York with her father. But when she 36. (knock) at Jack's door in New York, she was surprised to find that her special friend was just a ten-year-old boy named Tony!
Nowadays, the internet is becoming 37. (popular) among us than before. Although it is 38. (use), sometimes it is also dangerous. So when going online, we must be careful to keep us safe.

29.But 30.on 31.friends 32.a 33.His 34.lives 35.chatting 36.knocked 37.more popular 38.useful

【分析】
本题为英语语法填空题，需结合句子逻辑、固定搭配、词性变化、时态等知识逐一分析每个空：
1. 29空：前句说明Lily来自富裕家庭，后句转折提及父母忙碌无暇陪伴，需用转折连词；
2. 30空：考查固定搭配“spend time on sth”，表示“花费时间在某事上”；
3. 31空：“a lot of”后接可数名词复数，需将单数名词friend变为复数；
4. 32空：泛指“一个特别的朋友”，very以辅音音素开头，需用不定冠词a；
5. 33空：修饰名词name，需用形容词性物主代词；
6. 34空：主语He是第三人称单数，一般现在时谓语动词需用单三形式；
7. 35空：考查固定搭配“spend time (in) doing sth”，需将动词变为动名词形式；
8. 36空：时间状语last year提示用一般过去时，需用动词过去式；
9. 37空：句中出现than，需用形容词比较级；
10. 38空：be动词后需接形容词作表语，需转换词性。
【解析】
29. 前后句为转折逻辑，故填转折连词But；
30. 遵循固定搭配“spend time on sth”，故填on；
31. “a lot of”后接可数名词复数，friend的复数为friends；
32. 泛指“一个”，very以辅音音素开头，用不定冠词a；
33. 修饰名词name，用形容词性物主代词His；
34. 主语He为第三人称单数，一般现在时谓语动词用lives；
35. 遵循固定搭配“spend time doing sth”，chat的动名词为chatting；
36. 由last year可知用一般过去时，knock的过去式为knocked；
37. 句中than提示用比较级，popular的比较级为more popular；
38. be动词后接形容词，use的形容词形式为useful。
【答案】
29.But 30.on 31.friends 32.a 33.His 34.lives 35.chatting 36.knocked 37.more popular 38.useful
【知识点】
固定搭配、动词时态、词性转换
【点评】
本题考查初中英语核心基础语法，涵盖连词、冠词、物主代词、时态等知识点，侧重基础应用，适合巩固英语语法体系，难度适中。
【难度系数】
0.6