Grammer! Help !! Thx !!!

只有第二句是正確。

首先，因為是在說 yesterday，故此應用 past tense，而只有第二和第四句符合條件。

之後，因為在問句中，did we 後面的動詞是用 bare infinitive，在此即是 have，因此，第二句是唯一對的一句。

Only the 2nd sentence is correct.

What homework do we have yesterday ? – Incorrect because youshould use “did” instead of “do.”What homework did we have yesterday? – Correct.What homework do we had yesterday ? Incorrect because youare talking about yesterday, so you should use “did” and “have.”What homework did we had yesterday ? – Incorrect because youhad already used “did”, then you shouldn’t use had after that.

第二句是正確。

因為是 yesterday，so we use past tense，而只有第二和第四句符合條件

Then,"do, did, done"後面的動詞是用bare infinitive. "Had" is not bare infinitive, so
第二句是正確.