To master a foreign language,______.
问题描述：
To master a foreign language,______.
A.a lot of practice is needed B.it needs a lot of practice
C.practice is in need of \x05 D.one needs a lot of practice 选什么,
答
这种题看主语.前半句隐含的主语是“人”.“为了精通外语……”,那后半句一定要对应,不能偷换主语,这里的“one”就指“想精通英语的人”