用how old或how long填空:( ) did Tom learn ice skating?

用how old或how long填空:( ) did Tom learn ice skating? How did Tom learn Arabic? how long does tom learn chinese?是什么 How did Tom learn English?如何翻译 二.用适当的疑问词填空 (how ofen,hou many ,how old ,how much,how long , how long did you skate today?和how long have you been skating How long have you been skating?与How long did you skate?的区别 How long have you been skating?How long did you skate?中文翻译的区 How long ( ) you ( A.did skate B.have been skating 在这可不可以选A? How long have you been skating? How long has he been skating? How long has alison been skating?