$5.$ You should choose your travel provider on the basis of their eco principles and practices before your departure. (SB be advised to do STH ≈ SB should do STH)

$6.$ She asked her sister if she would do it for her. (Câu gián tiếp)

$7.$ His mother is not as tall as his father (So sánh hơn kém → so sánh không ngang bằng)

$8.$ He told his girlfriend that he had bought a ring (Câu gián tiếp lùi thì)

$9.$ The girl looked very upset because her electronic dictionary broke down. (Liên từ because để nối câu)

$10.$ If there weren't any air on the planet; people, animal, and plants couldn't live (Câu điều kiện loại 2)

`text{Chúc bạn học tốt!}`

`5` You should choose your travel provider on the basis of their eco principles and practices before your departure.

`6` She asked her sister if she would do it for her.

`7` His mother is not as tall as his father.

`8` He told his girlfriend that he had bought a ring.

`9` The girl looked very upset because her electronic dictionary broke down.

`10` If there weren't any air on the planet: people, animals, and plants couldn't live.