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 water in this river is harmful because It’s a ______ river.

Was Kate at the party last night?—Yes, she ________ a really nice dress.

The story was written in _____ easy English ____ even the seven-year-old boy could understand it.

____ from London to Edinburgh? [ ]