The workers spent more than 20 years on the Pyramid .Tom can’t come because he is ill.
问题描述：
The workers spent more than 20 years on the Pyramid .Tom can’t come because he is ill.
改为同义句
答
The workers spent more than 20 years on the Pyramid.=> The workers spent over two decades on the Pyramid.decade = 10 年Tom can't come because he is ill.=> Tom can't come due to illness.