A clean environment can help the city bid for the Olympics, which ________ will promote its economic development.

By the end of last week, nearly 80 percent of the work       .

We can't use it to tie the goods because it ________ be broken at the weakest position.

(2013·天津，7)While she was in Paris，she developed a ________for fine art.

Old-fashioned phones matter when wireless networks _____ in disasters.