`1`.In spite of being tired , they wanted to watch the film

`\rightarrow` In spite of / Despite + V-ing / N + Clause : Mặc dù

`2`.Although the festival took place in a remote area , a lot of people attended it

`\rightarrow` Although + C1 + C2 : Mặc dù

`3`.My father used to swim in the pool near his house when he was a bou

`\rightarrow` `\text{S + used to + V :}` Đã từng ( `3 , 9` )

`4`.Less electricty will be used in the future

`\rightarrow` BĐ `-` Thì TLĐ : S + will be + V3 / PII ( by O ) ( `4 , 12 , 14` )

`5`.It is about 300km from Ho Chi Minh City to Phu Quoc Island

`\rightarrow` Khoảng cách : It is about + distance + from N1 + to N2

`9`.My mother used to wash clothes by hand last year

`10`.Shanghai is the largest city in population , isn't it ?

`\rightarrow` Tag-question : Do / Does / ... + S ?

`\rightarrow` Khi mệnh đề là CKĐ thì Tag-question là CPĐ và ngược lại

`11`.I am interested in the film

`\rightarrow` be interested in + V-ing / sth : Hứng thú với việc gì

`12`.Renewable energy will be used in the future

`13`.This school is ours

`\rightarrow` Thì HTĐ ( ĐT Tobe ) : S + is / am / are + adj / n

`\rightarrow` ĐTSH : hers , ours , his , ...

`\rightarrow` Thường đứng ở đầu hoặc cuối câu , không đi trước Danh từ

`14`.Solar energy will be used to protect the environment

`15`.How far is it from Ha Noi to HCM City ?

`\rightarrow` Hỏi khoảng cách : How far is it + from N1 + to N2 ?

`\text{# Kirigiri}`