2. Complete each question with the correct form of the auxiliary verb and the main verb in the past tense.
1. _____ they____ their work yet? (finish)
2. ____ you_____ anything for lunch? (eat)
3. When______ you_____ this morning? (wake up)
4. What____ the students_____ in class yesterday? (do)
5. Where_____ I_____ my keys? (put)