It is ___ the customers’ needs that hasmade chain stores so popular in big cities in China.

These achievements_______ without the contribution of Qian Xuesen, a key leader of the New China’s nuclear, missile and so on．

There is some time before the train leaves. I think we shall ______ it if we hurry. [ ]

Anita spoke _________ quietly that I could hardly hear her.

Every year,a great many visitors come to visit the temple _____the 12th century,____ has broughta large income. [ ]