问题

In order to pass the examination, ______. [ ]
A: Mary stopped playing computer gaines
B: Mary's father bought her a lot of books
C: a lot of books were bought by Mary' father
D: Mary' teacher helped her with her lessons
B: Mary's father bought her a lot of books
C: a lot of books were bought by Mary' father
D: Mary' teacher helped her with her lessons
正确答案是: