--what should we do now mr clark

--what should we do now mr clark --please turn to page --- and look at the --- picture
a\ twelve; fifth
b\ twelfth; fifth
c\ twelve; five
d\ twelfth; five
说理由!

选A才是对的.Please turn to page twelve and look at the fifth picture.请翻到第十二页,看第五幅图画.
表示第几页英语用page +基数词,而表示顺序,自然用序数词.另外,根据句意,如果是look at the five pictures.(看这五幅画)的话,picture应该用复数形式,但实际用的是单数,所以应该选A,the fifth picture(第五幅画).
新年快乐!