1. since and for. Fill in either since or for before you check your answer.
2. Question words. Fill in the correct interrogatives.
3. Questions with do and does. Write the positive questions with do or does before checking your answer.
4. Questions. The parts you've got to ask questions with are underlined.
5. The passive voice. Transform the active sentences into the passive voice.
6. since and for. Fill in either 'since' or 'for' before you check your answer.