Relative Clauses (who / which / that) – B1 Grammar Test
This B1 grammar test focuses on defining relative clauses using who, which, and that, a very common topic in IELTS, TOEFL, and especially YDS grammar questions.
Choose the correct answer.
RESULTS
#1. The man ___ lives next door is a doctor.
#2. This is the book ___ I told you about.
#3. She is the person ___ helped me a lot.
#4. I like movies ___ have a happy ending.
#5. That’s the house ___ I was born.
#6. The car ___ he bought is very expensive.
#7. Students ___ study regularly usually succeed.
#8. This is the phone ___ battery lasts all day.
#9. The woman ___ son won the prize is very proud.
#10. The job ___ he applied for was difficult.
#11. I know a restaurant ___ you can eat very well.
#12. She’s the teacher ___ explains grammar very clearly.
#13. This is the reason ___ he left early.
#14. The people ___ live here are very friendly.
#15. I read the article ___ was published yesterday.
✅ Answer Key with VERY DETAILED EXPLANATIONS
🧠 IELTS · TOEFL · YDS Focused
🧠 Critical Exam Rule (READ THIS FIRST)
| Relative word | Used for | Exam logic |
|---|---|---|
| who | people | IELTS & YDS |
| which | things | IELTS & TOEFL |
| that | people & things | YDS favorite |
| where | places | Location meaning |
| whose | possession | High-value YDS |
📌 Defining relative clauses → no commas.
1. The man who lives next door is a doctor.
People → who
2. This is the book which I told you about.
Thing → which
📌 that would also be possible, but which is safer for exams.
3. She is the person who helped me a lot.
Human subject → who
4. I like movies that have a happy ending.
General preference → that
📌 YDS prefers that in defining clauses.
5. That’s the house where I was born.
Place + location meaning → where
6. The car which he bought is very expensive.
Thing → which
7. Students who study regularly usually succeed.
People → who
📌 IELTS Writing Task 2 generalizations.
8. This is the phone which battery lasts all day.
Thing → which
9. The woman whose son won the prize is very proud.
Possession → whose
🔥 Very common YDS trap.
10. I know a restaurant where you can eat very well.
Place → where
11. The job which he applied for was difficult.
Thing → which
📌 TOEFL Reading relative clause structures.
12. She’s the teacher who explains grammar very clearly.
Person → who
13. This is the reason which he left early.
Reason → which
📌 (Advanced note: why exists, but B1 exams prefer which/that.)
14. The people who live here are very friendly.
People → who
15. I read the article that was published yesterday.
Thing + defining clause → that
📌 YDS classic closure question.
🧠 EXAM SURVIVAL SUMMARY
Remember:
who → people
which → things
that → people & things (most flexible)
where → places
whose → possession
Exam focus:
YDS: that / whose / elimination
IELTS: clarity in Writing Task 2
TOEFL: reading sentence structure
