Rewrite the following sentences using questions words + to - infinitives

Rewrite the following sentences using questions words + to - infinitives
6. we must find out what we are to do next.
7.a good dictionary tells you how you  should pronounc.e the words
8. they are not sure who they will meet at the entrance.
9. she can"t remember when  she has to turn off the oven.
10. does he know what he should look for?