2.editorial
the editorial office编辑部
It is he who wrote this editorial.

3.educate
He was educated in Britain in the 1940s.

4.education
He never had any education.

5.effect
It seems that they did not have much effect.

6.effective
This medicine is not very effective.
the effective strength of the army军队的有生力量

7.efficiency
I admire his efficiency.

8.efficient
She is a very efficient secretrary.
Our new machines are much more efficient.

9.effort
It doesn't need much effort.
Please make an effort to push the car.
Finishing the work in one day was a very good effort.

10.e. g.
I am crazy about fruits,e. g. apples, pears,and oranges.