Barbara: Surely cell phones have negative effects. One of them is 1 . You had better believe it. Tony: What do you mean? Barbara: Look at students! They play games and talk to their friends 2 on their cell phones. Tony: It’s a problem, isn’t it? Barbara: Sure it is. 3 I’m trying to make is they don’t get time for studies. Tony: Actually, cell phones are quite useful in studies. 4 . Barbara: What kind of use are you talking about? Tony: For example, you can use it to get information of any subject 5 . Barbara: But everything has two sides. Tony: Yes. It’s also important to know 6 of cell phones. Barbara: Especially for college students.