Here’s a possible way to complete the conversation using the given phrases:

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Thanh: I think computer games are the most popular entertainments in modern societies. Is it right?

Hung: Yes, that’s right. And (1) **C. they aim at a variety of people in different ages**.

Thanh: And they cause addiction among teenagers.

Hung: That’s right. Because we (2) **A. are much higher than the positive effects of the games**.

Thanh: I think one of the reasons that computer games are very popular is that they provide (3) **B. opportunities for visual learning**.

Hung: Yeah, (4) **D. in my opinion, these games are more active and effective compared to watching TV**.

Thanh: But the negative effects they bring (5) **E. always do something to reach a higher level of the game**.

Hung: I think so, and students who prefer computer games to other entertainments have more behavioral problems than other students.

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Feel free to adjust any part of the conversation as you see fit!