—Hi,Mary.Would you like to go to the concert this evening?—Sorry,Tom.________ tomorrow's lessons,I have no time to go out with you.
H1N1 flu has become the leading influenza virus in all countries,and _________worldwide have even died from it.
“It's such a nice place.” Mother said as she sat at the table________ for customers.
With the cost of living________,they find it difficult to make ends meet.
It has been five years ________I was away from the army,but now I still remember the colorful life there.
As a salesman,I come into ________with all kinds of people in my work.