Verified answer

Ex3

1 has beendoing 2 have been driving 3 hasn’t passed 4 have had 5 have known 6 has beeneating 7 have never heard

Ex 4

1 OK 2have> has 3 have been fishing 4 OK 5 hating > hated

Ex 5

1 My sisterhas been painting since she was six, but she hasn’t sold a single painting yet.

2 I’m gladthat we have finished the work

3 My hands are dirty.I have been working in thegarage 

4 Ann has eaten all thesweets. Have you ever played cards?