Choose the correct option. 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 Ai nhanh nhất thì hứa sẽ tick! Cảm ơn!