— the population of the U.S.A. in 2009?—It about 309 million.A.What is; is B.What was; wasC.How many is; was D.How many was; is
What way can you think of ______ the mice in the room?
______are! I’ve never seen so many beautiful flowers.
---Hello, may I speak to your father, please? ---Sorry, my father ______ to London. He went there this morning.
Great Britain is one of the countries ____ people drive on the left.
You can’t catch up with others ______ you work very hard.