看图补全句子。

1. A: What _____________ doing? B: They're _________________. 2. A: Is she _________________? B: Yes, she is. 3. A: What are _____________ doing? B: They're ___________________. 4. A: __________________________? B: They are in the classroom. 5. A: What are they doing? B: ___________________________.

1. are they, doing an experiment 2. cooking dinner 3. they, eating grass 4. Where are they
5. They are playing chess
答案不唯一