人口增长模式的转变是与一定阶段的:
The most important _____ of his speech at the G20 summit was that we should all unite to fight against the finanical.
He directed exposure to pigs,otherwise he_______pig flu.
In no time _______ me if he had any further information for pig flu..
These plastic flowers look so _____ that many people think they are real,____they sell badly for the finanical crisis.
-----Hurry up. Xiao Shenyang is coming. ------ Oh, I was afraid that we_____.