Write it on the blackboard/in your exercise book/workbook/ a piece of paper .

把它写在黑板上/你们的练习本上/活动用书/一张纸上。

youdao

Write it on the blackboard/in your exercise book/workbook/ a piece of paper .

把它写在黑板上/你们的练习本上/活动用书/一张纸上。

youdao