_______ in a poor family made Yuan Longping determined to solve the hunger problem in China when he was still young.
Single-parent usually____ some of the functions that absent adult in the house would have served under the financial crisis.
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 .