How_________you_________(spend)your holidays?

How_________you_________(spend)your holidays?
How_________you_________(spend)your holidays?

How_________you_________(spend)your holidays?
后面那个空都是spend
前面那个：
did
will
can

how did you spend your holiday?
how are you spending your holiday?

How______do___you___spend______(spend)your holidays?

问将来的情况：How will you spend your holidays?
问过去的情况：How did you spend your holidays?

did...spend
或者will...spend
因为原句中没有指明时态，所以两者都可以

How did you spend your holidays?