例题1：
The book _______ I borrowed from the library is very interesting.
A. which
B. what
C. whom
D. who
答案：A. which
解析：这是一个限制性定语从句，修饰先行词"book"，引导词在从句中作宾语，因此用关系代词"which"。
例题2：
The girl _______ bicycle was stolen is crying.
A. who
B. which
C. whose
D. whom
答案：C. whose
解析：这是一个限制性定语从句，修饰先行词"girl"，引导词在从句中表示所属关系，因此用关系代词"whose"。
例题3：
Do you know the reason _______ he didn't come to the party?
A. why
B. which
C. when
D. where
答案：A. why
解析：这是一个限制性定语从句，修饰先行词"reason"，引导词在从句中作原因状语，因此用关系副词"why"。
例题4：
The house _______ they used to live in has been sold.
A. what
B. where
C. when
D. which
答案：D. which
解析：这是一个限制性定语从句，修饰先行词"house"，引导词在从句中作宾语，因此用关系代词"which"。
例题5：
Is this the shop _______ you bought the shoes?
A. what
B. where
C. when
D. which
答案：B. where
解析：这是一个限制性定语从句，修饰先行词"shop"，引导词在从句中作地点状语，因此用关系副词"where"。
例题6：
The man _______ is standing over there is my father.
A. who
B. whom
C. which
D. whose
答案：A. who解析：这是一个限制性定语从句，修饰先行词"man"，引导词在从句中作主语，因此用关系代词"who"。
例题7：
I have a friend _______ mother is a doctor.
A. who
B. whose
C. which
D. whom
答案：B. whose解析：这是一个限制性定语从句，修饰先行词"friend"，引导词在从句中表示所属关系，因此用关系代词"whose"。
例题8：
This is the hotel _______ we stayed during our vacation.
A. that
B. where
C. when
D. which
答案：B. where
解析：这是一个限制性定语从句，修饰先行词"hotel"，引导词在从句中作地点状语，因此用关系副词"where"。
例题9：
The car _______ color is red belongs to my friend.
A. whom
B. which
C. whose
D. what
答案：C. whose
解析：这是一个限制性定语从句，修饰先行词"car"，引导词在从句中表示所属关系，因此用关系代词"whose"。
例题10：
Do you know the time _______ the train will arrive?
A. when
B. where
C. why
D. what
答案：A. when
解析：这是一个限制性定语从句，修饰先行词"time"，引导词在从句中作时间状语，因此用关系副词"when"。
