From ___ The Origins in the late 1950s and 1960s electronic games have become a multibillion dollar industry

a. a
b. its
c. too
d. much
e. their

The use of social networking sites ___ both positive and negative consequences
a. has
b. have
c. had
e. is having
d. are having ​

From ___ The Origins in the late 1950s and 1960s electronic games have become a multibillion dollar industry