--- Did you tidy your room? --- No, I was going to tidy my room but I ______ visitors.
The present financial crisis has put the world economy in a difficult .
Now, the world’s focus is all on Shanghai ______ the 2010 world Expo is to be held.
There be any difficulty in passing the oral test since you have practiced a lot in the school.
____you are familiar with the author’s ideas, try reading all the sections as quickly as you possibly can.
Only lately _____ about the dark secrets behind the seemingly-happy marriage of the golf star Tiger Woods.