I really like my sister. She . so well.
а)sining
б)is sing
В)sing
г)sings

Our friends were . in France at the time of the floods.
а)lived
б)living
в)liveing
г)live

She sings so well. Кроме пункта г никакой не подходит, так как в остальных либо неправильно дано время, либо нет окончания s (she относится к 3 лицу)

Were living. Past Continous. Кроме living никакое другое слово из данных не может сочетаться с were

чашка чая - a cup of tea

коробка конфет- a box of candies

стакан молока- a glass of milk

пакет конфет- a candy package

бутылка сока- a bottle of juice

кусочек торта- a piece of cake

his flat is in a new house. there are three rooms in the flat.  the living-room is the largest of all. it is a nice light room. there are pictures on the walls. there is a round table in  the middle of  the room. there is  a sofa at  the wall with large thick carpet in front of it. a study and a bedroom are small, but very comfortable.