Do you have ____ to say about your family?

The World Health Organization has given some advice onto protect us from being infected(感染） with H7N9.

Excuse me, Mum. When can we have dinner? —Not until itin half an hour.

Listen! Is that Linda singing in the next room?— No, it ________ be her. She is still in Shanghai.

It’s important _____ the violin well. [ ]