Of all the books on the desk, ________ is of any use for our safety.

Why don’t we go and have a cup of tea?—______.

_______ can a tiger weigh, do you know? — Yes, I know that a big one can weigh over 300 kilos.

Is this ________ Chinese book?—No，it’s ________ English book.

Do you have ____ to say about your family？