Laura: (on mobile phone) Hi, Beth. Where are you?
Beth: I'm in the cafe. I (eat) am eating
Laura: (eat) Are you eating a pizza?
Beth: No, (be)I am not . What (do) are you doing?
Laura: I'm with my sister. We (shop) are shopping.
Beth: (buy)Are you buying food?
Laura: No, (be) we are not . We (buy)are buying some CD's.
Beth: What's that noise? (shout) Are some people shouting.?
Laura: No, they (play)are playing heavy metal in the shop!