A．spend anything B．cost anything C．pay nothing D．need something
单项选择题How many people outside cities go into cities to look for jobs each day（）
A．70% of the people. B．4% of the people in tile world. C．More than 75 000. D．About 75 000 peopl
单项选择题29（）
A．worth B．spent C．worthy D．used
