Unit 4 Finding your way综合提升Ⅰ. 单项选择( )1. There is _______ “u” and _______ “s” in the word “use”.2·1·c·n·j·y A. a; a B. an; an C. a; an D. an; a ( )2. 【2013·淮安】Every day, Cathy eats _______ apple to keep fit. A. a B. an C. the D. /( )3. There is a bridg..