Как будет в прошедшем времени have?

1.a garbage is not only ugly, bute dangerous because it causes an air pollution.

2. cars are an important part of a life for most people. but cars also cause a pollution and release fume.

3. in canada people don't realise that they throw out 10,000 tons of a waste.

4. over 14 billion pounds of a waste per year is throw out to sea and it kills millions of sea animals.

5. if we want to breathe  a healthy air we have to think about what we do.

6. because of our lack of a knowledge there is now a huge hole over an antractic.

7.a water is a vital element of a life.

sunokasuri написала с ошибками

я же напишу без единой ошибки и вдобавок, я любила хм и все будет perfect: )

hannah montana is an american pop star, mostly loved among teenagers. she's got a husky, pleasant voice. she is very talanted as then she has performances every day. hannah is a slim,tiny,beautiful girl. her eyes color is blue and hair is blond. her dad is her producer and a best friend through her life. she's also got an older brother jackson.

hannah montana always acts herself funny and original on shows and duets with the most popular singers in the usa.

her songs have meanings and are known by heart by millions of her fans.