The appearance of smartphones has changed people’s life to a large degree. Not only can people use them to make and receive phone calls, they can __1___ use them to surf on the Internet, send and receive emails, communicate with each other through video and make new friends. They have helped make human contact become easier and more __2___ than 

before. Besides helping people to connect __3__ each other, smartphones allow people to have fun. People can watch videos and movies online as well as play many different online games either with themselves or with others. Using the camera function __4__ by smartphones, people can take pictures of themselves, their family and friends and even things that interest them. Now smartphones have also been used as a kind of credit card.__5__ , people can use them to pay for their grocery shopping without taking the money with them.