Boys, don’t lose____ in playing Angry Birds. It is bad for your eyes to play computer games for a long time.
-I have bought a Chinese – English dictionary? -When and where_____ you _____ it?
He has been in the USA .
-Excuse me, does Mr Smith son live here? -He used to_______ here, but he gets used to ______ in a modern city.
The old man lives _______ , but he never feels ________.
I can’t buy this bike, because it is_____ expensive.