1.But people is having fun ---is 改成 are
2.lots of people on street---- people后面加上are
3.look see they're having a good time----去掉see
4.old people in the park under a tree playing cards---tree 后面加上are
5.Either go shopping or hang out---go改成going
6.In the yanghe superket have people are shopping---去掉have
小灰同学,你的题目都没写对啊!