1i 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.​