i have read this book twice now i'm reading it third timei have r_其他解答

i have read this book twice now i'm reading it third time
i have read this book twice .now i'm reading it ( )
A.a third time.B.the third time

人气：399 ℃　时间：2020-01-26 14:04:02

解答

答案是 B
我已经读两遍了现在读第三遍,序数词前要加定冠词这是规定~