No one knows the age of the old man wandering in the street all day, but judging from his appearance, he is in his sixties.
He was unaware of the financial crisis involed, so his choice was quite_____.
____the sketch of Xiao Shenyang made a _____has been known to us all.
That Xiao Shenyang was elected_____model worker of May Day caused ____enthusiastic discussion in China.
----What do you know the _____ of are the pig influenza in humans? ---- usually similar to regular human seasonal influenza .
People go out with masks,________.