Verified answer

21. 1) I have got a family.

2) Dave has got a friend.

3) Meg and I have got a friend.

4) Cliff and Brett have got a family.

22. 1) My friend has got a family.

2) Sam and Alf have got friends.

3) Jill has got a friend.

4) We have got a friend.

have употребляется с местоимениями I, we, they, you.

has употребляется с местоимениями he (или когда речь идёт о ком-то, как в задании Sam / Jill), she, it.