Complete the dialogue. A: Hello. are you today? B: I'm fine. 's the weather like today? A: It's sunny and hot. Let's go swimming! B: Good idea! can we swim? A: There is a nice river next to the park. B: can we go? A: At 4 pm, I think. B: Is it OK if my friend goes with us? A: not? is your friend? B: She's my sister, Jenny. A: are we going to go to the park then? B: On foot! :