Is it possible to have two words with the same particle in a sentence?


This question popped in our exam in which you had to choose which particle was
right. The question was:

> 誕生日___母に花をあげました。

with に or まで as the options. まで didn't make sense for me and I don't know if
going with に is possible.




Yes it's perfectly possible to use the same particle twice or more in a
sentence and even in the same clause, and it is very common.

There are some restrictions e.g., I don't think you can have the object marker
を more than once within a single clause, but then を only has one function
(almost). に is a particle with many different functions.

You are correct that the missing particle is に and this does not cause any
ambiguity or difficulty in understanding.

> 誕生日 **に** 母 **に** 花をあげました。  
>  (I) gave flowers **to** mum **on** (her) birthday.

