It’s not easy for the expert to ______ pig flu.in humans from regular human seasonal influenza.
Many people swarmed into big cities to seek their ________ , but most of them failed.A. money B. earnings C salary D. fortune
Every Saturday morning we can see that old woman __________ shopping.
The doctor told me to __________ for a week.
They were trying to remove harmful ___________ from cigarettes.
Jack was sure to get this year’s scholarship as the standards of scholarship were not terribly_________