1. Should they help Jane with the sewing?
= Should Jane be helped with the sewing ? 
2. The mechanic is repairing Judy’s car.
= Judy's car is being repaired by the mechanic.
3. Must we finish the test before ten?
= Must the test be finished by us before ten.
4. They use a computer to do that job nowadays.
= A computer is used to do that job nowadays.
5. Employers must pay all travel expenses for this training course.
= All travel expenses must be paid for this training course by employers.
6. Did her story take them in?
= Were they taken in her story?