ex 3.
1. Is Tom drinking coffee now?
2. Are the boys playing now?
3. Is the girl skipping now?
4. Are the cats eating fish?
ex 4.
1. I am standing in the classroom now.
2. Pete is not reading a book now.
3. The pupils are listening to the teacher now.
4. My friend is not helping me now.
5. Is Fred dancing with she now?