it___helen a long time___the great wall.

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• it___helen a long time___the great wall.
• Have you ever been to the Great Wall in China? It is 46of the wonders of the world and is 47to people all over the world. The Great Wall 48long ago. Everybody in China will tell you that it was built in the Qin Dynasty (秦朝). In Fact it 49a long period of time in China’s 50. We can 51tell how many years it took. We don’t know how many stones 52build the wall. We don’t know how many people died in building the Great Wall. We 53can say that it was built
• 英语语法be动词问题选择正确的答案填空：1.This postcard () great!(is,are)Yes,().(it is,they are)2.These stamps () beautiful!(is,are)Yes,().(it is,they)3.How big () they?(is,are)4.How long () it?(is,are)5.() a map of China,(It's,They're)6.() a picture of the Great Wall.(It's,They're)
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