Change the sentences into questions. （就画线部分提问）例: She is doing the dishes
What is she doing?
1. His grandparents are sleeping.
2. Her uncle is writing a letter.
3. We are eating dinner.
4. They are listening to music.
试题答案
1. What are his grandparents doing?
2. What is her uncle doing?
3. What are you doing?
4. What are they doing?