Since the beginning of AIDS,about 11.7 million people__died of it.这个为什么填has

Since the beginning of AIDS,about 11.7 million people__died of it.这个为什么填has
Since the beginning of AIDS,about 11.7 million people__died of it.这个为什么填has

Since the beginning of AIDS,about 11.7 million people__died of it.这个为什么填has
SINCE 自从,表示已经发生,所以用现在完成时态.单数是因为,把这些人看成一个整体.die of ,死于,

自从非典开始，大约有1千1百70万人死于这个疾病
has done完成时，与since连用

应该是答案错了。应该填have。此处people相当于person的复数是复数名词应该用复数谓语。