找错误,把正确的打出来 He sitting there for a long time without doing anything.把sitting改成sitted
问题描述：
找错误,把正确的打出来 He sitting there for a long time without doing anything.
把sitting改成sitted
答
He set there for a long time without doing anything.
答
He has been sitting there for a long time without doing anything.
答
he has been sitting there......
答
He has been sitting there for a long time without doing anything.
for a long time 很长一段时间，句子时态用现在完成时
答
he has sat there for a long time without doing anything.
用现在完成时