There is one mistake in each sentence, Underline and correct the mistake

Ex6. There is one mistake in each sentence. Underline and correct the mistake.1.       Which time do your classes finish?             
2.       Our summer vacation last for about three months.
3.       I think we have few vacations than American pupils.
4.       Our cows produce little milk than Mr. Tuan's. 
5.       How much hours a day do you do your homework?
6.       She brought a lot of money with her so that she could buy any foods.
7.       Would you like any milk with your coffee or would you like it black?
8.       There are a lot of vegetables but meat in traditional Vietnamese meals.
9.       Pho is an traditional Vietnamese food and many foreign people enjoy it when they visit Vietnam.
10.  Much people like cooking but not many of them are very good at cooking.
11.  There are cattles in the fields.
12.  I haven’t heard some news about the accidents.
13.  The Philippines are a country in Southeast Asia.
14.  Can you lend me your scissor?
15.  Two young ladies have just walked out of the restaurant.
16.  My sister bought me a new pair of trouser.
17.  Many people never show some anger.
18.  How much any milk will you have for breakfast?
19.  I want to buy some new clothe.
20.  How many money did you borrow from your brother?