In his speech, Premier Wen Jiabao points out that creativity is ______it takes to keep a nation highly competitive .

She has already tried her best. Please don’t be to _____ about her job. [ ]

.The place _____ the bridge is supposed to be built should be _____ the cross-river traffic is the heaviest.

He ＿＿＿articles for our wall-newspaper these three years, and he ＿＿＿about forty articles

Compared with the generation of our grandparents, who grew up in an age when people were lack of almost every kind of materials, we should be content with the________ supply.