Superpowers: Vocabulary

Flames had melted a lead pipe and caused the leaking gas to ____.

• She began to ____ doubts about the decision.

• I ____ that the work will be completed next year.

• She lost her balance and that caused her to ____ 100 feet to her death.

• Air pollution will soon ____ above safety levels.

• They ____ all the food supplies in just three days.

• The troops ____ the border day and night.