作废的重要空白凭证，应将作废凭证的（）号码剪下。
A、右上角
B、左上角
C、正上方
D、凭证右方
参考答案：A
_____, your composition is full of mistakes.
A．Writing carelessly
B．Written carelessly
C．Having written carelessly
D．Being written carelessly
采用重合闸有什么意义？
