The ship would have sunk with all on board ______ for the captain.
Experts have found that the disease will lead to a greater increase in the number of sufferers unless ________ seriously when the symptom first appears.
To improve their oral English, everyone in the class is supposed to ________ actively in these discussions.
— Jack, Jane seems unhappy?— Don’t worry, a funny story will ________ her.
The moment their idol took the floor, the excited fans ________ thunderous applause.
________, you'll never be able to persuade him.