`II)`

`11` . He spent two days decorating the living room

`12` . Mary's sister doesn't speak English as well as Mary does

`13` . No matter how hard Peter tried , he couldn't start his car

`14` . The day was so cold that we stayed indoors

`15` . The cost of living appears to rise to be rising again

`16` . The girl who lives next door to us is very friendly

`17` . I wish my son could speak English perfectly

`18` . I have never visited Ha Long Bay before

`19` . I stayed up late last night because I had to finish my homework

`20` . Nam asked me where my parents lived then

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II)

11 . He spent two days decorating the living room

12 . Mary's sister doesn't speak English as well as Mary does

13 . No matter how hard Peter tried , he couldn't start his car

14 . The day was so cold that we stayed indoors

15 . The cost of living appears to rise to be rising again       

16 . The girl who lives next door to us is very friendly

17 . I wish my son could speak English perfectly

18 . I have never visited Ha Long Bay before

19 . I stayed up late last night because I had to finish my homework

20 . Nam asked me where my parents lived then