How can i join lines into some individual object in this file?

[Luziboo]

As shown in these pictures, I have a file that contain a lot of lines(they seperated by eachother). I want to merge/join the nearest 4 lines into a square and then fill color on it.But I can  only merge/join them  one by one .Does it had any way to merge/join them more faster?

[Kurt Gold · Accepted solution]

There are several ways. One way is:

- Select all

- Take the Shape Builder tool

- Hold down the Shift key and drag across all objects

[Luziboo]

thanks very much!