Grammar exercises: verb to be + possessive case ('s)

Choose 3 exercises from the links below. Do the activities and write your answers in the boxe online. If you prefer, make a print screen of your scores and send a file with them. (Escolha 3 atividades a partir dos links abaixo). Faça os exercícios e poste suas respostas no texto online. Você pode fazer um print screen das telas com o seu score (pontuação final) e salvar em arquivo, para enviar.)   

https://elt.oup.com/student/headway/elementary4/grammar/unit01/hwy_elem_unit01_1?cc=global&selLanguage=en 

https://elt.oup.com/student/headway/elementary4/grammar/unit01/hwy_elem_unit01_2?cc=global&selLanguage=en

https://elt.oup.com/student/headway/elementary4/grammar/unit02/hwy_elem_unit02_1?cc=global&selLanguage=en

https://elt.oup.com/student/englishfile/elementary3/grammar/file01/grammar01_a01?cc=global&selLanguage=en

https://elt.oup.com/student/englishfile/elementary3/grammar/file01/grammar01_b01?cc=global&selLanguage=en

https://elt.oup.com/student/englishfile/elementary3/grammar/file01/grammar01_b02?cc=global&selLanguage=en