Exploring ________ space is exciting, yet dangerous. There is _______need for both robots and humans for space exploration.

 You should have ____ good knowledge of English if you want to find a job here. Because English is the  working language in_______ most international trade centers.

The artist，whose early career was far from being________success，is now widely recognized as________master of painting.

For Wang Shun，________ university graduate from China's less developed Guizhou Province，shopping online is ________ delight as she tries to keep pace with the lives of those in big cities.

______ application of transgenic (转基因) technology should be restricted on all food production and the government should take ______ “scientific attitude” toward food, Yuan Longping said.