Ⅰ. Complete the sentences with the proper form of the words given.
1. Sally and I have been friends since (grade) 7.
2. If you stay up late and keep busy all week, you will get easily (stressed).
3. The old photo album contains pictures of my grandparents. It is (price) to our family.
4. My brother and I solved the problem (different).
5. Our school (recent) held an art festival.
6. The volunteers (offer) free water to tired runners during the sports meeting last Friday.
7. The blue bikes parked by the gate are (their) ; my red one is over here.
8. The discussion in our history class was very (live) today as we debated different opinions.
9. Don't forget to (return) the borrowed novels to the library after you finish reading.
10. The (climax) of the adventure story happened when the main character finally faced the dragon in its hidden lair.

1. Grade 2. stressed 3. priceless 4. differently 5. recently 6. offered
7. theirs 8. lively 9. return 10. climax

【分析】本题为英语词汇适当形式填空题，需结合句子语境、语法规则（词性、时态、代词类型等）判断所给词的正确形式：先分析句子结构确定所填词在句中充当的成分（如表语、状语、名词性成分等），再根据语法要求对所给词变形，同时注意固定搭配、时态标志、专有名词格式等细节。
【解析】1. 表示“七年级”的专有名词，首字母需大写，故填Grade；2. get是系动词，后接形容词作表语，stressed本身为形容词，意为“有压力的”，故填stressed；3. 此处需形容词作表语，price的形容词形式为priceless（无价的），故填priceless；4. 修饰动词solved需用副词，different的副词形式为differently，故填differently；5. 修饰动词held需用副词，recent的副词形式为recently，故填recently；6. 时间状语last Friday表过去，需用一般过去时，offer的过去式为offered，故填offered；7. 此处指代“他们的自行车”，需用名词性物主代词theirs（相当于their bikes），故填theirs；8. be动词后接形容词作表语，live的形容词形式为lively（生动的），故填lively；9. forget to do sth是固定搭配，需用动词原形，故填return；10. the后接名词，climax本身为名词，意为“高潮”，故填climax。
【答案】1. Grade 2. stressed 3. priceless 4. differently 5. recently 6. offered 7. theirs 8. lively 9. return 10. climax
【知识点】词汇变形、一般过去时、代词用法
【点评】本题为初中英语基础题型，考查词汇词性转换、一般过去式运用、名词性物主代词等核心基础语法与词汇知识，侧重检测学生对基础知识的掌握情况，难度适中。
【难度系数】0.6

Ⅱ. Complete the sentences with for or since.
1. My father has been on business a long time. He will return in two days.
2. We have studied in this school about one and a half years.
3. then, my father has written articles for the newspaper.
4. Mike has offered much help to Sally she began to learn physics.
5. last summer, we've travelled a lot of places of interest.
6. It's about ten years she left the company.
7. We are tired out now because we have run such a long time.
8. She has been away from the city about ten years.
9. Half an hour has passed the train left.
10. He has been studying English he was six years old.

1. for 2. for 3. Since 4. since 5. Since 6. since 7. for 8. for 9. since
10. since

【分析】
要完成句子需掌握现在完成时中for与since的核心用法区别：for后接时间段（表示动作持续的时长），since后接时间点（包括过去的时间点或过去的时间状语从句，表动作从该时间点开始持续到现在）。解题时先判断空格后的内容是时间段还是时间点/从句，再对应选择for或since。
【解析】
1. 空格后a long time是时间段，故填for；
2. 空格后about one and a half years是时间段，故填for；
3. 空格后then是过去的时间点，句首首字母大写，故填Since；
4. 空格后she began to learn physics是过去的时间状语从句，故填since；
5. 空格后last summer是过去的时间点，句首首字母大写，故填Since；
6. 空格后she left the company是过去的时间状语从句，故填since；
7. 空格后such a long time是时间段，故填for；
8. 空格后about ten years是时间段，故填for；
9. 空格后the train left是过去的时间状语从句，故填since；
10. 空格后he was six years old是过去的时间点，故填since。
【答案】
1. for 2. for 3. Since 4. since 5. Since 6. since 7. for 8. for 9. since 10. since
【知识点】
现在完成时中for和since的用法；介词辨析
【点评】
本题考查现在完成时中for与since的核心区别，属于基础语法题，只要准确区分“时间段”和“时间点”即可正确作答，是英语时态部分的常考基础题型。
【难度系数】
0.2