1. We’ve just bought a house. We must the windows because they are filthy. Also, the wallpapers have to as they look awful.  
clean/be changed
be cleaned/change
cleaned/changed
be cleaned/be changed
been cleaned/was clean
 
 
2. John is going to have his flat decorated .
 
last month.
since January.
next weekend.
at the moment.
moment at the
 
 
3. The match is this weekend so the footballers to Paris tomorrow.
 
were flying
have flown
had flown
are flying
were fly
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