A问: what is British worker’s number one complaint about working in an office.
B答:It is the printer not working.
上面的working 是现在分词吗?它的否定式是可以直接加not 吗?
It is the printer not working.
应该把以上句子改为下面句子
The printer is not working.这台打印机不工作了。
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