Vamos analisar as opções para preencher as lacunas corretamente, considerando o contexto da frase e os tempos verbais adequados. A frase fala sobre um evento que ocorreu no passado ("yesterday"), então precisamos usar o passado simples ou o passado contínuo. 1. a) saw / read - "I saw you in the park yesterday. You were sitting on the grass and read a book." (Incorreto, pois "read" deveria estar no passado contínuo). 2. b) saw / were reading - "I saw you in the park yesterday. You were sitting on the grass and were reading a book." (Correto, pois "were reading" indica uma ação contínua no passado). 3. c) was seeing / read - "I was seeing you in the park yesterday. You were sitting on the grass and read a book." (Incorreto, pois "was seeing" não é usado nesse contexto e "read" deveria estar no passado contínuo). 4. d) see / reading - "I see you in the park yesterday. You were sitting on the grass and reading a book." (Incorreto, pois "see" não está no passado). 5. e) ’ve seen / Reading - "I’ve seen you in the park yesterday. You were sitting on the grass and Reading a book." (Incorreto, pois "’ve seen" não é adequado para um evento que ocorreu em um momento específico no passado). A opção correta é b) saw / were reading.