She had hardly gone out when a student came to see her._____________________ when a student came to see her.
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Little _____________(he care)about what others think.
Hardly ____________(I had reached)the bus stop when the bus started.
Never _________________(Zhou Yang will forget) his first assignment at the office of a popular English newspaper.
产品成本计算中,最基本的方法是( )。
A. 品种法
B. 分步法
C. 分批法
D. 分类法