.The problem, according to the experts, is ________ we should do with the salty land.
--- Lucy seems in low spirits.--- Yes, all her efforts were ____ and no one was interested in her invention.
From the top of Mount Tai you can get a particularly wonderful _____ of sunrise.
--- What a pity! Leo missed the football match.--- ______. He was busy with his schoolwork.
Not until he promised to return it to me as soon as possible ____ my electronic dictionary to my classmate.
The place _____ the bridge is supposed to be built should be _____ the cross-river traffic is heaviest.