根据语境,在横线处填入合适的单词补全对话。 Mary: School is 1. . Let's 2. to the playground. Kitty: OK. Mary: What 3. is it now? Kitty: It's five o'clock. Guard: Time to 4. home, kids. Mary: What time is it? Kitty: It's six o'clock. It's time 5. dinner. Mary: Oh! Let's go!