18. That's the........comes from Nha Trang can play tennis very well.

A. who

B. whom

C. whose

D. both A & B

19. The party, at.......I was the guest honor, was extremely enjoyable.

A. where

B. that

C. who

D. which

20. Passover is a festivals.......is celebrated by all Jewish people.
A.where

B.when

C. who

D. which

21. The camera......Sarah bought yesterday was made in Japan.

A. who

B. which

C. where

D. Who