Mary is a girl. _____ is in Class 3, Grade 1.[ ]
A. He
B. She
C. It
D. You
答案：B
过度学习
—There _____ little fresh water _____.
—Don't worry. We'll soon get out of the desert.[ ]
A. has; drinking
B. are; to drink
C. is; to drink
D. are; drinking
