Ответ:
Has Cliff begun to study maths this morning ?
Has my father sold his car today?
Have they just come back from the beach?
Has Liz waited for her friend at the bus stop this morning?
Has Rob just talked to a policeman?
Have you visited your friends today?
Have we discussed the new film this evening ?
Has Sam repaired his watch lately?
Объяснение:
Конструкция вопросительных предложений
Have/Has+ Подлежащее+сказуемое в прошедшем времени, если это неправильный глагол, то третья форма