Choose the correct option?

Choose the correct option. 1 I have has already finished my homework2 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 San 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 wak9 The weather have / has been terrible since yesterday. 10 My little sister have / has just stopped crying. ​.