The H7N9 bird flu is a disease ______ can be very dangerous.
The H7N9 bird flu is a disease ______ can be very dangerous. something must be done to ______ the bird flu. the bird flu is very serious in Turkey ,where 18people have The bird Flu disease once became the t_to people in some are 填词Cancer is a d__________ disease,which can’be cured. The vaccine is used to ( )us from the bird flu.a.prevent b.p H7N9禽流感病例为什么用“H7N9 bird flu case” Bird 不是鸟的意思吗? could be very dangerous when there is a a lot of meeting were()because of the dangerous disease If we _____careful ,fire can be very dangerous A.don't be B. 2.—Bird flu（禽流感）is still very serious in some countries. Thinking of sb.can be a kind of disease.Lucky is that you bo