1 I haven't visted Oslo since 1998
=> The last time
2 It took him two days to decorate the living room (Spent)
=>
3 She speaks Russian better than her sister (AS)
=>
4 The boy is too short to reach the book on the shelf (Enough)
=>
5 I don't play tennis as well as you do
=> you
6 I haven't been to the dentist's for two years
=> the last time
