How flowers are!
She is a diligent student, and all her spare time she has _____ staying in the library.
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.