5. Claire's hands began to ___________ with fear moments before she walked on stage for her violin solo. After she played the first note, however, she felt more relaxed.
8. Yesterday, many flights to Paris were cancelled because of ___________ weather conditions. Now that the weather has improved, flight schedules have returned to normal.
12. Lately, more people have been trying to reduce the amount of garbage they create by avoiding ___________ items such as paper plates, plastic knives and forks.