giải thích hộ vs ạ
18. The boy _________eyes are brown is my friend.
A. whose B. who C. whom D. which
19. The teacher told his students __________laughing.
A. stop B. stopping C. to stop D. stopped
20. I don’t have a computer. I wish I __________a new one.
A. have B. have had C. had D. will have