问题
Nobody in the family knows for sure why ________ [ ]
A: it broke out fierce quarrels between the newly wedded couple
B: the newly wedded couple often broke out fierce quarrels
C: fierce quarrels often broke out between the newly wedded couple
D: fierce quarrels were often broken out between the new wedded couple
B: the newly wedded couple often broke out fierce quarrels
C: fierce quarrels often broke out between the newly wedded couple
D: fierce quarrels were often broken out between the new wedded couple
正确答案是：
