D. Circle the correct words.
1. While Tony tried/was trying to take a photo, he dropped/was dropping the camera.
2. Sandra has a test tomorrow morning, so she should/shouldn't go to bed late.
3. The Wi-Fi isn't working again. We should/shouldn't call the technician.
4. While I lived/was living in London, we used to go to the cinema every Friday.
5. Don't worry. We didn't sleep/weren't sleeping when you called/were calling last night.
6. I spilt/was spilling my orange juice while I walked/was walking across the living room.

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