阅读下面题目，判断正误， 请在不改变句子意思的前提下， 改正其中的错误部分。

(1) Zhou Gang is a worker at Yulin in Shanxi. He

(2) works on the Great Green wall with many other peoples.

(3) We visited him at his workplace between the young trees

(4) and told him about his work. "Many thousands of trees

(5) must be plant every year," he said. "The more, the better.

(6) This year alone, we've already planted ten thousand of trees.

(7) You see all that small trees over there on the hills

(8) That was sand five years later. Now it's a young forest! In a few

(9) years' time, those mountains will be covered with trees,

(10) too!" He pointed the high mountains away.

　　People suffered（遭受）a lot from sandstorms. When they came, car and bus drivers had to drive slowly：they could hardly see the road in front of them even during the day-time. In the year 2000, a very strong sandstorm happened in a certain city. It was one of the worst sandstorms that lasted nearly 2 hours. People couldn't see their hands before them. The streets were almost empty. The smell from the sandstorm was very bad. Some people disappeared in the sandstorm.

　　Now, China has built the Great Wall across the northern part of the country. It will stop the wind from blowing the earth away. It will stop the sand form moving towards the rich farmland in the south. It has already saved a lot of land. But more “Great Green Walls” are still needed. They hope in a few years' time the whole country will be covered by forests.