If I felt some pain, I’d stop _______ .

— I hear you have got an opportunity _________ at the children’s hospital.— Yes, I love children and it will be a good experience for me. 

---Do you often have a good time _______ after-school activities?--- Of course, we do. And we always have a lot of time _______ football.

My mother often spends 2 hours  ______ housework every day.

Seeing their teacher _______ into the classroom, they stopped _______ at once.