What twelve and twenty-eight?--They are forty.这句话那错了?
问题描述：
What twelve and twenty-eight?--They are forty.这句话那错了?
答
这是数学题,应该是：
What is the sum of twelve and twenty-eight?
It is forty.
或
How much is twelve plus twenty-eight?
It is forty.
（好就请采纳.）