“Why couldn’t they meet us at five o’clock?” “Because they were delayed by _________.”

Biology is _____.

Soon after the mud-rock flow hit Zhouqu, Gansu Province, many soldiers came to the ______ as many people were trapped underground.

In order to prevent people spreading rumours through the Internet, the government decided to place ______ on the freedom of spreading news on line.

Mo Yan’s winning the 2012 Nobel Prize for Literature shows the world’s _______ of contemporary Chinese Literature.