请教新东方语法突破题一道

huahua115

____ white ginger,one scrapes and washes the roots before drying them.

A If makes

B When making

C Made

D The making of


为什么Ｂ答案？省略了什么成份？谢谢

conquer

ding !!!!

thinkers

一共有6个省略的 词

if when while although though even though

bfghdggf

当主语为句子主语时，主语和系动词可省。