--- Did you ask the guard _______ happened? --- Yes, he told me all _______ he knew.
I still remember how many years ago I last met her in the countryside.
His proposal is so idealistic that there are many difficulties in putting it into practice.
As nobody here knows what is wrong with the machine, we send for an engineer to handle the problem.
The Spring Festival, a traditional Chinese festival, is celebrated in Asian countries.
Can you think of some cases people are likely to tell lies?