—_____ the population of the U.S.A. in 2005? —It _____ about 296 million. A. What is; is B. What was; was C. How many is; was D. How many was; is
(安徽)Rick has learned a lot about Chinese culture________he came to China.
Miss Lin________a lot of work for the poor area since 2010.
—________have you been in Chongqing? —For five years.
They dug up the road and________a box hidden under it.
There has never been such a beautiful village________in the world.