------Is this ruler Mary’s?------No, it _______Mary’s. Hers is on the desk..

----Shall I go and buy two more bottles of beer? ----No, I’ve already bought them yesterday. That           be enough for us two.

Whenever my grandmother calls just to chat with me，I drop everything and enjoy the moment，knowing these times__________pass．

I was really anxious about you. You______ home without a word.

I think that's unlikely to happen, but if that ______ occur, both America's and China's interest would be severely damaged.