$1$. They didn't know what they should do to help her overcome stress
$2$. Jonas wondered if she should discuss that matter with her teammates
$3$. An asked Mary where she should register for a course on life skills
$4$. James and Lily couldn't tell how to find a support center for the homeless.
$5$. They had no idea where to start their campaign.
$6$. Trang asked her mother who she should call upon arriving at the airport.