一、单选题（共15小题）
1.—I want to know if Maria us in the fashion show tonight．
—I believe if she her homework, she will join us．
A． joins; finishes B． will join; finishes
C． joins; will finish D． will join; will join
2.People ______ overweight need more water than thin people．
A． who is B． which are C． that is D． who are
3.I don’t know ______ Apple iphone4s.
A． that she is so crazy about B． what is she so crazy about
C． why she is so crazy about D． how she is so crazy about
