Match to make sentences. There is one extra half you do

Match to make sentences. There is one extra half you do not need.
11 My uncle's invited me....... A in the school tennis tournament.
12 I've been thinking..... B turns to use the skateboard.
13 Dave's competing......... C learning to swim when I had the chance.
14 I just had my turn, so it's... D to go fishing with him next weekend.
15 You should concentrate.... E to what our coach tells us.
16 We took it in..... F on improving your technique.
17 I regret not.... G to taking part in the competition.
18 We always listen.... H of taking up golf.
I your go now.