一、单项选择（共15小题，每小题1分，计15分）
( )1. _______apple _______ day keeps _______ doctor away!
A; a; the B. An; a; the C. The; a; a D. An; the; the
( )2. --- How much does the book _________ you ? --- 120 yuan .
A. take B. spend C. cost D. pay
( )3. Today I will go on a picnic with my parents. --- ___________!
