He will have to watch his ________ because of his serious stomach problem. 

 —Excuse me, is this ________ new pencil sharpener?  —Yes, it’s ________. He bought it just now.

—Could you tell me something about the boy who helped you just now?—Sorry, I know nothing about him. We are __________ .

 When you’ve learnt English, you’ll find it a bridge to so much ______.

—Have you heard about the airplane accident?—Yes, all of the passengers on the plane lost their___________.