learning a foreign language is very useful to me.seeing is b

learning a foreign language is very useful to me.seeing is b Learning a foreign language is useful. （改为同义句） ()()very usef To learn a foreign language is not easy.与 Learning a foreign It is very easy to learn a foreign language To learn a foreign language well is very important. Learning a foreign language is not only a very difficult and A knowledge of foreign language is always useful. To learn a foreign language well is useful ,I think.I think_ to learn a foreign language well is useful,I think(改为同义句) 几个英语小问题1.To learn a foreign language well is useful,I think. One new ____ to learning a foreign language is to study the grammar is not（） in learning a foreign language A.in all B.a