Помогите избрать верный вариант :1.Work more...I can039;t keep up with you

Помогите выбрать верный вариант :
1.Work more...I can't keep up with you
a)slow
b)slowly
2.Janet looks more...each time see her
a)beatiful
b)beautifully
3.He is the most...driver I know
a)careful
b)carefully
4.Our teacher is...than yours
a)nicer
b)more nicely
5.Children can play more...in the park than on the street
a)safe
b)safely
6.I fell...when I am on holiday
a)happy
b)happily