问题

ened to DrWilson’slecture about the protection of wild animals, but I was unable to grasp its key
A:when suddenlycame the good news
B:while thegood news came suddenly
C:when suddenlydid the good news come
D:whilesuddenly came the good news
B:while thegood news came suddenly
C:when suddenlydid the good news come
D:whilesuddenly came the good news
正确答案是: