Đáp án :

31 Despite working hard , he can't support his large family.

32 Unless he take these pills , he won't be latter.

33 The girl who lives next door to me is very friendly.

34 If people didn't pollute the water , a lot of fish wouldn't die.

`31.` Despite working hard, he can't support his large family.

Giải thích: Although + Mệnh đề = Despite + V-ing/Noun

`32.` Unless he takes these pills, he won't be better.

Giải thích: Unless = If not: trừ khi (khi đã sử dụng unless thì theo sau phải là khẳng định)

`33.` The girl who lives next door to me is very friendly.

Giải thích: Mệnh đề quan hệ với đại từ "who" thay thế cho danh từ chỉ người (the girl)

`34.` If people didn't pollute the water, a lot of fish wouldn't die.

Giải thích: Câu điều kiện loại 2: If S V-ed, S would/could/might V.

@ `Ly`