There are lots of things _____ I need to prepare before the trip.

You can use MSN to talk with your friend on the Internet. -I know. But can you tell me_______?

Are Mr. and Mrs. Wang living alone in the house? —Yes, they have three sons, but ______ of them live in their own houses.

I’m thirsty, Steven. Please pass ____ a bottle of water.

Mr. Brown is an experienced doctor. He is always _______ in facing with emergency.