=()。
参考答案:e
It is not enough only_______the rules of grammar if you want to learn English well.
A.keeping in the mind
B.to keep in mind
C.to keep in your mind
D.keeping in your mind
未取得对外贸易经营者备案登记表但按照国家有关规定需要从事非贸易性进出口活动的单位不属于进出口货物收发货人。()