问题

Whenwereturnedfromourholidays, wefoundeverything ____What____whilewehadbeenaway?[ ]
A:changed;hadhappened
B:changing;happened
C:hadchanged;hashappened
D:waschanging;happened
B:changing;happened
C:hadchanged;hashappened
D:waschanging;happened
正确答案是: