Part a
1.    Mr McGuinness is from Ireland, isn't he  ?
2.    The car isn't in the garage, is it ?
3.    You are John, aren't you ?
4.    She went to the library yesterday, didn't she ?
5.    He didn't recognize me, did he?
6.    Cars pollute the environment, don't they ?
7.    Mr. Pritchard has been to Scotland recently, hasn't he ?
8.    The trip is very expensive, isn't it ?
9.    He won't tell her, will he ?
10.    Hugh had a red car, didn't he ?
Part b
1.    IC
2.    IC
3.    C
4.    IC
5.    C
6.    C
7.    IC
8.    C
9.    C
10.    C