1. i am reading a book
she is reading the book
he is reading the book
they are reading the book
2. i am listening for traffic
she is listening for traffic
he is listening for traffic
they are listening for traffic
3. i am wearing a helmet
she is wearing a helmet
he is wearing a helmet
they are wearing a helmet
4. i am cycling on the road
she is cycling on the road
he is cycling on the road
they are cycling on the road
если я правильно поняла, то так