How many cities have you visited?

How many cities have you visited? How many f( )countries have you visited? how many cities have you been to in china 中文 how many people have visited the moon? How many cities have you been to in China?的意思是什么?该怎样回答? How many cities have you been to in China该怎样回答? How many cities have you travelled to 中"to"可以省略吗?为什么? how many ()do you have? how many sisters have you How many friends have you Which cities or countries have you visited?的意思以及怎么回答? We have visited many places.（对画线部分提问） you visited.