1. is boiling
2. is learning
3. are talking
4. is shining
5. is taking
6. is waiting for
7. are trying
1. am visiting
2. are having
3. are looking at
4. are doing
5. is changing
6. are getting
7. are arriving
1. are visiting...is cleaning...am cleaning...is doing...is reading
2. am writing...am sitting...am visiting...are going
3. is changing...are becoming...is developing...are getting
4. am going...am visiting...am going...are throwing...is going
