you can use cursor:
declare @m1 as varchar(max);
declare @m2 as varchar(max);
set @m1 = '';
set @m2 = '';
declare dircursor cursor for select * from #Temptable;
open dircursor;
fetch next from dircursor into @m2;
while @@FETCH_STATUS=0
begin
set @m1 = @m1 +' '+ @m2;
fetch next from dircursor into @m2;
end
close dircursor;
deallocate dircursor
print @m1;