题目内容：

you must give the book to Ben as soon as he ----- A get back B will return C returns D came back

优质解答

C
AS SOON AS 一……就……,引导时间状语从句,主句用一般将来时,从句要的一般将来时要用一般现在时代替,因为主语是HE,故谓语动词要加S