估算模式适用于评价等级及( )的确定。
A．评价范围
B．评价密度
C．评价内容
D．评价公式
参考答案：A
The book be Lucy's because her name is on the cover. [ ]
A. must
B. can
C. need
D. does
My mother asked me ______.
A．what does he want
B．what he wants
C．what did he want
D．what he wanted
