A:must
B:ca
C:should
D:would
汉高祖曾经令贾(商)人不得衣丝乘车,并用重税困辱他们。孝惠、高后时,仍不准市井之子仕宦为吏。这说明西汉初年实行( )
Li Yang, the founder of Crazy English, says that he copies it down________he comes to a beautiful sentence.