3.  An asked Mary where she should register for a course on life skills.

4. James and Lily couldn't tell how they should find a support center for the homeless.

5.  They had no idea when they should start their campain. 

6.  Trang asked her mother who she should call upon arriving at the airport.

7.  Phong was not sure he should dial 18001567 to ask for advice about family problem.

8. They wondered what they should do to help those disadvantaged children.

9. She couldn't decide where she should start teaching her children to cook.

10. Hoa asked Nam how she should deal with negative emotions and stress.