21. When a giraffe(长颈鹿) has ______ drink, it has to stand with its front legs wide apart in order to reach ______ water.

　　   A. /; /             B. a; the          C. the; /          D. /; the

　　22. - How beautiful the dress looks ____ you! Don't you want _____, Madam?

　　- Please show me _______.

　　A. in; one; another            B. on; it; another 

　　C. in; it; the other             D. on; one; the other

　　23. ---You just think of yourself! You kept me waiting for at least three hours.

　　   ----I am sorry that you _______ think so.

　　    A. would         B. could          C. should        D. might

　　点击下载：http://files.eduu.com/down.php?id=251601