语法填空Hua Weiguang took up taking photos after he retired. He used to be {#blank#}1{#/blank#} teacher. Ten years ago, Hua found some people planting trees in his hometown, Horqin in Inner Mongolia. And then he started to take photos {#blank#}2{#/blank#} them.
In Hua's photos, many things can {#blank#}3{#/blank#}(find), from the sandstorms to young trees, as well as the people who fight against desertification(沙漠化).
It was difficult {#blank#}4{#/blank#}(plant) trees here. The workers had to cover {#blank#}5{#/blank#}(them) or their mouths would be full of sand. They wore hats, {#blank#}6{#/blank#}(scarf) and goggles(护目镜) all the time. In summer, it was so hot {#blank#}7{#/blank#} the workers had to lie down on the ground next to their cars to cool off. They also had to eat their lunch with the blowing sands. What about sunstroke(中暑)? Well, they took some medicine, {#blank#}8{#/blank#}(drink) a little water and then continued working.
Now with the improvement of the environment, animals are living there {#blank#}9{#/blank#}(healthy). Without Hua's photos, no one would believe that this change is possible.
So far, China's forest {#blank#}10{#/blank#}(increase) by over 70,000,000 hectares(公顷). One tree after another, these people built a green Great Wall.
