10. They have just bought new books for school. A) Have they just bought new books for school?
B) Had they just bought new books for school?
C) Did they buy new books for schoool?
D) Has they just bought new books for school?
E) Did they buys new books for schoool?
A
Объяснение:
В подобныз вопросах нужно ориентироваться на предложение. Если там have, то и в вопрсе пишем have, также и с just bought (не уверенна что смогла объяснить, но попыталась)