1 I have / has already finished my homework.
2 My son have / has just started the university.
3 The Black family have / has gone to the seaside.
4 Dad haven't / hasn't watered the plants.
5 Have/Has Sam ever been to the USA?
6 Our English teachers have / has never ridden a horse
7 Ann, Frank and Jim have / has bought a new house.
8 Have/Has you taken the dog for a walk?
9 The weather have / has been terrible since yesterday.
10 My little sister have / has just stopped crying.​