Those singers have lovely ___________ and they sing very well.
—_____ the population of the U.S.A. in 2005?—It _____ about 296 million.A. What is; is B. What was; wasC. How many is; was D. How many was; is
The population of Shanghai is larger than _____ of Shenyang.
The traffic in the city _____ be terrible, but now it has improved a lot. I think you will _____ it soon.
—What a nice bicycle! How long have you _____ it ?—For a week.
—In the old days, most teenagers had to work for the landlord (地主) in the field to help _____ their families, because their families couldn’t _____ education for them.—What a pity!