1.How long will you stop?
2.He give me much good advices.
3.In Pakistan there are many poors.
4.He had a great number of money.
5.The London is a big city.
6.He took out his shoes.
7.The exam begins from July 1st.
8.He comes off a noble family.
9.This paper is inferior than that.
10.He threw the stick in the river

correction

1.How long will you stay?
2.He give me many good advices.
3.In Pakistan there are many poor.
4.He had a great sum/amount of money.
5.London is a big city.
6.He took off his shoes.
7.The exam begins July 1st.
8.He comes of a noble family.
9.This paper is inferior than other.
10.He threw the stick into river