原题,少说题错的We can use MSN---(talk)with each other on Internet.

原题,少说题错的We can use MSN___(talk)with each other on Internet.
我填的talking,talk 区别!use to do和use doing区别!
别给我说题错了!然后说used to+v原（过去常常）然后后面一大串跟这个么用的!