— Air quality in our city is becoming worse and worse. —Yes. These days' PM2.5 readings are frightening. We must do something to ______air pollution.
The teacher insisted that the boy________ nothing wrong and shouldn’t be punished.
They were ______busy ________ the project ______ the time.
Jim is always forgetful. Please remember to remind him ______ the important interview______ he won’t miss it.
We are covering these _______girls’ wonderful performances__________.
Very few people spent as much time ______Hepburn did _______ for charities.