Did you notice him come into the hall?— Sorry, sir. I _______ with my friends online.

Can you say something about Wenchuan earthquake (汶川地震)?—___________ people lost their lives in it.

The old tower must be saved, _______ the cost.

How _is your grandmother? She is _.

. –Mary, is this ______ umbrella?–No, it’s not mine. It is _______.