The police still haven’t found her, but they’re doing all they      .

 —________ I swim here?—I’m sorry. Children _______ swim alone here.

When I was your age, I dared not go out alone at night, ________ you?

— What does the sign over there say?— No person ______ enter the area without the official permission.

- These apples look very beautiful.- They ________. See the price $ 3.99 a pound. Very expensive, aren’t they?