下图中方框所示地区有关历史表述正确的是

A．秦朝开辟五尺道，纳入统一 * * 版图

B．与唐朝和亲后正式纳入中央 * *

C．元朝时归属中书省管辖

D．清朝册封活佛以分而治之

-They have __________ homework this weekend.  

-That's too bad.[ ]

A. too much

B. too many

C. much too

D. many too