精选优质文档-倾情为你奉上一、单项选择不积跬步,无以至千里( )1. -Have you returned the book to the library _?-Yes, I have _ returned it.A. yet, yet B. already, already C. already, yet D. yet, already( )2. -_ have you lived here?-Since last year.A. How long B. How often C. How soon D. How far( )3. He has been away _.A. since a month B. for a month C. for a month ago D. in a month( )4. When did your father _ your mother?A. marry B. marry