1. I can assure you that this box ________ never been opened before I opened this morning.

2. She hates Christmas because she feels so sad and ________ despite all the people coming by to greet her.

3. He was walking along the streets which were usually so crowded, but that afternoon for some reason they looked ________ .

4. After the good news of my promotion I felt like walking in the park, but not ________ and my sister was the only one I felt like walking with.

5. Try ________ the door really hard if you want to open it.

6. In winter months there is always a ________ of catching cold.

7. Is he ________ arrested as we speak?

8. There was a ________ he would do the wrong thing because he saw the reward but not the risk of crime.

9. Try ________ these irregular verbs by next week.

10. The nights were the worst part for she was haunted by ________ thoughts which were killing her.