A writer is a person who writes.____it is not ____to know

题目

A writer is a person who writes.____it is not ____to know
A writer is a person who writes._____it is not_____to know the parts of a new word to understand it.______ it will help you many times
第一个空:then now yet sometimes
第二个空helpful useful enough good
第三个空but and so for

答案

1.sometimes
2.enough
3.but