does
did take
took
有不明白的再追问吧，如果对你有所帮助，请别忘了采纳哦
who taught you maths last year？
答：Mr Liu _did____(do).
问：When ____did_____ you ___take______（take） these photos？
答：I __took_______( take )them last week.
does
did take
took
1 did 2.did ,take 3.took
第一题问题有错，应该是：who taught you maths last year？
答：Mr Liu _did____(do).是过去式。
问：When ____did_____ you ___take______（take） these photos？
答：I __took_______( take )them last week.照片已经拍了，而且是过去了的事情，所以用过去式。
did
did
took
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