英语改错题,

英语改错题,
改错
1.A group of students is playing games under a tree near the river.
2.We don"t need any more help at the present.
3.Most of pictures on the table are mine,and some of them are Bob"s.
4.He usually gets up at 7 in morning.He get up as usually this morning.
5.The police is looking for a tall dark man.