1选择题
—I heard that the project was completed ahead of schedule.
—Yes. It was the team’s joint effort ______ made it possible.
- A. that
- B. which
- C. what
- D. who
答案：A
解析：本题考查强调句型。强调句结构为“It is/was + 被强调部分 + that/who + 其他”。被强调部分是“the team’s joint effort”，指物，且强调句中主语是“it”，因此用that。易错点：容易误认为是定语从句而选B，但此处是强调句型，不是定语从句。
2选择题
The reason ______ he gave for his absence from the meeting was ______ his car broke down on the way.
- A. why; that
- B. which; that
- C. that; because
- D. that; that
答案：D
解析：本题考查定语从句和表语从句。第一个空：先行词是“The reason”，在定语从句中作“gave”的宾语，因此用关系代词that或which，不能用why。第二个空：“was”后接表语从句，说明原因，用that引导，that在从句中不作成分，只起连接作用。易错点：第一个空易误选why，但why在定语从句中作状语，而此处需要作宾语的代词；第二个空易误选because，但表语从句说明原因时，通常用that，不用because。
3选择题
It is required that every student ______ a mask before entering the classroom during the epidemic.
- A. wears
- B. wore
- C. wear
- D. will wear
答案：C
解析：本题考查虚拟语气。在“It is required/demanded/suggested... + that从句”结构中，that从句要用虚拟语气，即“(should) + 动词原形”。易错点：易受主句时态影响误选A或B，但此处是固定句型要求用虚拟语气。
4选择题
______ the news that our team had won the championship, all the students burst into cheers.
- A. On hearing
- B. When heard
- C. While hearing
- D. On heard
答案：A
解析：本题考查非谓语动词作状语。句子主语“all the students”与动词“hear”之间是主动关系，且“hear”与“burst”几乎同时发生，因此用现在分词的一般式。介词on后接动名词，表示“一……就……”，符合语境。易错点：易误选B或D，但B项“when heard”是省略结构，完整应为“when they heard”，而D项“on heard”结构错误，介词on后应接名词或动名词。
5选择题
The manager insisted that the project ______ by the end of next month, or we would lose the contract.
- A. was finished
- B. would be finished
- C. be finished
- D. is finished
答案：C
解析：本题考查虚拟语气。动词“insist”表示“坚持要求”时，其后的宾语从句要用虚拟语气，即“(should) + 动词原形”。此处项目是“被完成”，因此用被动语态“(should) be finished”。易错点：易受主句时态或从句时间状语影响误选A或B，但insist表示“坚持要求”时，从句必须用虚拟语气。
6选择题
The book ______ by the famous author is popular among teenagers, ______ covers many social issues.
- A. written; which
- B. writing; that
- C. written; that
- D. writing; which
答案：A
解析：本题考查非谓语动词作定语和定语从句。第一个空：动词write与book之间是被动关系，且动作已完成，因此用过去分词written作后置定语。第二个空：引导非限制性定语从句，修饰先行词“The book”，且从句缺主语，因此用关系代词which。易错点：第一个空易误选writing，但book与write是被动关系；第二个空易误选that，但that不能引导非限制性定语从句。
7填空题
It is high time that we ______ (take) immediate action to protect the environment.
答案：took / should take
解析：本题考查虚拟语气。在“It is high time that...”句型中，that从句要用虚拟语气，动词用过去式或“should + 动词原形”（should不可省略）。易错点：易误用一般现在时或将来时，但此句型是固定用法，表示“早该做某事了”。
8填空题
The news ______ (announce) by the headmaster excited all the students in our school.
答案：announced
解析：本题考查非谓语动词作定语。动词announce与名词news之间是被动关系，且动作已完成，因此用过去分词announced作后置定语，相当于定语从句“which was announced by the headmaster”。易错点：易误用现在分词announcing，但news与announce是被动关系。