Mary: Let's play computer games. Gina: That sounds great. Where is your computer? Mary: I don't have a computer. Do you have a computer? Gina: No, I don't. But I have a TV. Let's watch TV. Mary: No, that sounds boring. Let's play tennis. I have a tennis bat. Gina: Good. Where is it? Mary: On the sofa. Do you have a bat? Gina: No, I don't. Does your brother have a bat? Mary: Yes, he does. And he has tennis balls. Mary has   _  .
a computer a TV a tennis bat a tennis ball