We are all ____ (graduate) of No. 1 Middle School. Which school are you from?
260×35=____
260×350=____
2600×350=____
260×3500=____
2600×3500=____
26×350=____
用学过的词语造句。
①后悔
②窟窿
③亡羊补牢
④南辕北辙