改错:The 12-year-old boy is old enough to look after him.The 12-year-old boy is old enough to look after him.

问题描述:

改错:The 12-year-old boy is old enough to look after him.
The 12-year-old boy is old enough to look after him.

The 12-year-old boy is old enough to look after himself.应该是这样改吧