I.rewwrite The sentences without changing the meaning the given words in blanket
1.I am a student of a school .My school has five blocks of buildings (which) -> I'm
2.We stayed in a magnificent hotel on our holiday in Da Lat (where) -> the hotel
3.It was difficult for me to decide where to go on holiday last year (mind) -> I found it
4.I cant reply his e-mail because I don't know German (could) -> if