lt took the doctor three hours to do the operation (改为同义句)lt took the doctor three hours to do the operation (改为同义句)The doctor ______ three hours _______ the operation

问题描述:

lt took the doctor three hours to do the operation (改为同义句)
lt took the doctor three hours to do the operation (改为同义句)
The doctor ______ three hours _______ the operation

这个题有点简单.spent 和 on