THE MAIN PART OF THE WALL IS ABOUT 3,400 KILOMETERS LONG. III. LAN...

10. The main part of the wall is about 3,400 kilometers long. III. LANGUAGE FOCUS Each line of the following passage has one error. For each line, find and underline the error and then write the correct one in the column on the right. Number one has been done for you as an example. (2.5 pts)