HOMEWORK

The Great Wall is a gigantic military defensive project built in ancient China, the first purpose of building the Great Wall was to resist the invasions of northern nomadic groups, it stretched ten thousand Li from east to west, and spans seventeen provinces. The Great Wall mostly comprises walls, passages, and watchtowers. The Great Wall we see today can mostly be traced back to the Ming dynasty, the best preserved and most spectacular part is at Badaling in Beijing. With 2000 years history, some parts of the Great wall are in ruin or have disappeared, however, it is still the most appealing place all around the world. The Great Wall is the building program with longest duration and greatest cost in human lives. There is no doubt that the Great Wall is on the list of the new Seven Wonders of the World.

Hello Soumy

Interesting text with just a few corrections. Remember to use 'the' in front of this monument because there is only one in the world. (Even though the full name should be 'The Great Wall of China.') You also need a little more care with some tenses.

Best wishes

Bob