【初二英语】3道句型转换【急!】

【初二英语】3道句型转换【急!】
1.I don't know how to practice speaking English.(改为同义句)
I don't know ____ _____ practice speaking English.
2.I called my friend Tina yesterday.(改为同义句)
I ____ ____ _____ _____ to Tina yesterday.
3.Children in China call the old grandma or grandpa and don't call them by their given names.（改为同义句）
Children in China call the old grandma or grandpa _____ _____calling them by their given names.