1: have I
2: Bard 'a poet'
3:Your brother's friend's dogs love to chase after balls in the park.
4:In 1909, Igor Sikorsky, then a nineteen year old, designed and built his first helicopter, which almost flew.
5:Ravi had been playing cricket for years before he became a representative player.
6:Libby, on the other hand, was extremely diligent with her studies.
7:The netball game will go ahead, provided that the weather stays fine.
8:Inside the old shed, everything was strewn all over the place in utter chaos.
9:On 1 January 1901, the Commonwealth of Australia was proclaimed in Centennial Park, Sydney.(confused about this one, but tried my best)
10:With more dedication, Toula could be a good surfer.
11: Which words are underlined? I can't help ya there mate.