My sister ________ for long when she fell seriously ill.

My father and my mother have been married for 30 years, and never once ______ with each other.

When the sick mother got up, she was surprised to find that her six-year-old daughter _______ in the kitchen.

-----Where is your new home now?-----In the new developed zone. But I ______ downtown for five years.

By the time you have finished reading this book, your meal ______ cold.