1. All teachers are taking a lunch break, so please see ______at 1pm.

A. they​  ​​​B. them​​  C. themselves​​ D. their

2. John loves watching music ______ makes his soul relaxed and peaceful is ballad music.

A. that​​​​  B. in which​​  C. what  ​​D. who

3. It was Linda ______ met the partners in person and discussed the deal. So if any agreement is not satisfactory, let her know immediately.

A. which​​​  B. in that​​  C. who​​​  D. what

4. All the students were taking a break from ______ class today because it was raining heavily.

A. theirs​​​  B. their​​​  C. they​​​   D. themselves

5. Have you ever known a girl ______ mother is a famous person? Because today I invited her to attend my birthday party.

A. who​​​   ​B. in which​​  C. that​​​   D. whose 

6. Yesterday was a great day for me ______ my lover proposed to me in front of the stadium.

A. when​​​  B. which​​  C. that​​​   D. in which

7. Everyone has ______ own secret that they can’t confide in to anyone and that’s why I can’t tell you everything.

A. them​​   ​B. they​   ​​C. their​​   ​D. themselves

8. Paris is a beautiful capital of France ______ my husband and I first met here. At that time, he gave me an umbrella in the rain.

A. when​​​   B. where​   ​C. what​​   D. whom

9. No one in the company knows ______ Wendy resigned as her director. According to some opinions that because she wants to move to another country.

A. why​​​​   B. which​​   C. what​​   D. in that

10. Mr. David, ______ we had treated last year, is a big corporation president in China.

A. who​​​​   B. that​​​   C. which​   ​D. whom

11. Mrs. Sally, ______ we studied in the US last year, is a very talented person and a successful businessman.

A. in who​​   ​B. which​​   C. with whom​   ​D. in that

12. I have two brothers, both of _____ are students at Harvard University. He was trying on shoes at that store and I was waiting for him.

A. who​​​​   B. which​​   C. them​​   D. whom

13. Kent doesn’t know ______ the teacher gave his grade so low. Because he was sure he did well in this test.

A. when​​​   B. why​​   ​C. that​​​   D. who

14. Do you remember the day ______ we first went to Dubai? It was a memory that I still cannot forget until now.

A. what​   ​​B. whom​   ​C. when​   ​D. why

15. Bangkok is considered the capital of Thailand ______ I was born and lived until I was 10 years old. After that, my family emigrated to Korea to do business.

A. which​​​   B. why​​​   C. where​​   D. in which