1. Carla: Hi, Rocco. **Are** you playing with Big Al?
Rocco: No, I'm not. **Are** you playing with Big Al?
Carla: No, I'm not! Where is he? What **is** Big Al doing?
Rocco: I don't know. **Is** he answering his phone?
Carla: No, he isn't!
Big Al: Hi, Carla. What **are** you doing? **Are** we playing a game?
Carla: No, Big Al. I'm looking for you. I'm worried.
**Explanation:**
This exercise focuses on using the correct form of the verb "to be" (am, is, are) in present continuous questions. Here's a breakdown:
* **Are** is used with "you".
* **Is** is used with singular subjects like "he".
* We need to choose the correct form to make grammatically correct and meaningful questions.