Complex sentence: The "Eazy-Duz-It" 12-inch single sold 140 thousand copies and Ren immidiatly joined N.W.A, wrote much of Eazy's album and, when Ice Cube returned in early 1988, the group began working on Straight Outta Compton.
Split into simpler sentences: The "Eazy-Duz-It" 12-inch single sold 140 thousand copies. Ren joined N.W.A, wrote much of Eazy's album and, when Ice Cube returned in early 1988, the group began working on Straight Outta Compton.