—Mum, may I go to the cinema?  

—No, you ____. You ____ finish your work first. [ ]

A. can't; can

B. may not; may

C. can't; must

D. mustn't; might

谢安生活的时期是在中国古代的哪个朝代（）。

A．东汉

B．西汉

C．东晋

D．西晋