_____ the different cultures, values and levels of economic development in China and the West, both sides should respect the diversity of their development paths.

It’s reported that workers on London’s underground train network will go on strike（罢工）in ________ with colleagues losing their jobs at ticket offices. 

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

AIDS is spreading all over the world at shocking speed. Where its dark _______ appears, we see pain, tears and death.

 What ______  will it make whether he knows this or not?