Tibet is facing a(n)____task to maintain  stability and all government workers must be on their highest guard.

--- I hear Andy and Lily are going to have a party to celebrate their ten years of ____ . --- Really? They have ____ for ten years?

 I know you are very ___ ice-cream, but you will gain weight if you eat too much.

 While sometimes it’s necessary to have phone calls in public, loud phone conversations are not so     .

That couldn’t be better means____.