it's very imporant for us to learn englsh by--------(make) flashcards
问题描述：
it's very imporant for us to learn englsh by--------(make) flashcards
答
making, by+doing.
用flashcards学英语对我们很重要
答
by介词后要用动词的ing形式，所以是making
答
It's very important for us to learn English by making flashcards.制作抽认卡来学习英语对我们很重要。 by 后面要用动词的ing形式。
答
making
by是介词，介词后跟动名词
答
making
by是介词,介词后面如果用动词,要用其ing形式.