`26,C`

- Dẫn chứng: They are fifteen now ...

`27,D`

- Dẫn chứng: Even their father has trouble telling them apart. Their mother doesn't, though.

- Ý của câu: Bố họ khó phân biệt. Nhưng, mẹ họ ko như vậy `->` Mẹ họ có thể phân biệt

`28,B`

- Dẫn chứng: Their older brother .... never knows which one is which. He doesn't even try.

- Ý chung: Anh ấy ko thử để phân biệt họ mà đáp án B diễn tả ý ngược lại `->` Chọn

`29,B`

- Dẫn chứng: Eva and Suzie have the same friends. They always ....

`30,C`

- Dẫn chứng: They knew which one was which, and that was all that mattered.

- Chỗ bôi đậm: Họ biết ai vs ai `->` Họ biết những khác biệt của nhau `->` C

-tham khảo !

`26` `C`

`-` Dẫn chứng : They are fifteen now....

`27` `D`

`-` Dẫn chứng : Their mother doesn't ,though . She always knows which twin is which

`28` `B`

`-` Dẫn chứng : He never knows which is which, he doesn't even try

`29` `B`

`-`Dẫn chứng : They have the same friends . They always mix them up `->` "They" ở đâu chỉ "the same friends" ở vế trước

`30` `C`

`-` Dẫn chứng : They knew which one was which, and that was all that mattered.

`\text{@ TheFallen}`