Complete the conversation with can, can ’ t, could, or couldn ’ t. Sally: Do you want to go to the beach with me today? Sam: I don’t know. It looks a bit cold. I think it (1) rain later. Sally: Well, the weather (2) be changeable. But it’s sunny now. Come on! Sam: (3) we wait an hour to see what happens? Sally: I don’t want to wait! Come on,Sam! Sam: You (4) be very impatient sometimes! Sally: Sam, hold on, you don’t want to come to the beach because you ( 5 ) swim! Isn’t that right? Sam: I (6) swim! Just not very well. That’s all. Sally: I don’t believe it! I (7) swim when I was five! Sam: Good for you. But I bet you (8) play the piano when you were five. Sally: No, I (9) . Could you? Sam: Yes, of course. I (10) .