以下句子，均有一处错误，将它改正过来并写在下面的横线上。
1.My mother doesn't care on her health at all.
2.Peter has many interesting story to tell us.
3.Which is the most interesting,reading or swimming.
4.Why don't you want to play and Lily?
5.Will you help someone in trouble?
6.Grandpa,when shall little Ann come to our home?
7.I don't like raindays at all.
8.Why do you always laugh on other classmates?
9.She often makes few mistakes than her classmates.
10.At the top of Mount Qomolongma,three metres of snow can fall at one day.
11.The moon is much less than the Sun.All of them are stars.
12.New York is the capital of the United States.
13.The Mid-Autumn Festival is one of the most important festival for Chinese people.
14.Kangaroo can go 9 metres in one jump and move 74 km/hr.
15.Most of children like chocolate.Do you know what is chocolate made of?
16.Who is standing in the front of the red car over there?