One of the most important questions they had to consider was__________ of public health
.Chinese people were so excited when they saw president Hu ____the PLA on the National Day of 2009.
It was in Japan that the atomic weapon was used in 1945, and the power ____increased enormously ever since .
Only after you have known someone for some time _____to appreciate his real worth.
----How useful do you think the Internet is as a_____ of information?----I think it is fairly useful, but a lot of the information you find online is false.
.----The research on the news bird flu virus vaccine is challenging and demanding.Who do you think can do the job?----____ my students have a go ?