请选择CBA0\4Y2@2i,s'r.G2k3p ---What did you do last weekend?(z7r9Y9|,^7x*r
---I __________ .(z7r9Y9|,^7x*r
A. read a book(z7r9Y9|,^7x*r
B. readed a book(z7r9Y9|,^7x*r
C. am reading a book(z7r9Y9|,^7x*r