5. Read and tick. (读一读,勾一勾)
1) A: Is Sam reading books?
B: Yes, he is.
2) A: What is Bill doing?
B: He is sleeping.
3) A: Is Amy doing her homework?
B: Yes, she is.
4) A: Is Ms Smart cooking?
B: Yes, she is.
5) A: Is Mr Smith watching TV?
B: No, he is listening to music.