We should say there is a slight difference between 1 and 2.
1.Who looks after our flowers while we are on holiday? = Who usually/always looks after our flowers while we are on holiday, and does not necessarily mean the speaker IS on holiday.
2.Who is looking after our flowers while we are on holiday? = the speaker is now on holiday, and is asking who is looking after the flowers.
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Originally Posted by borat also, saying "on holiday" is not really normal. a holiday is non-specific period of time. you might say "during holidays?" or if since you're probably away from your flowers on some kind of trip, "on vacation?" would be most common. |
On holiday is British English.