Danny is ________ donuts now.[ ]
A. eating
B. eats
C. eat
答案：A
－_____do you go to the library?
－Once a week.
A．How long
B．How soon
C．How often
D．How many times
下列属于品质标志的有()。
A.人的性别
B.文化程度
C.人的年龄
D.工种
E.工人工资、工业产值
