Question

Help me solve exercises A and B

Answer 1

4A.

1. has been

2. hasn't been

3. have seen

4. hasn't seen

5. has eaten

6. haven't eaten

7. have visited

8. hasn't swum

4B.

1. has, swum

2. have, visited

3. has, eaten

4. has, seen

5. have, been

6. has, swum