$2.$ This exercise isn't hard as I thought.

- So sánh ngang bằng: as + adj + as.

- isn't hard → as.

$3.$ Life in foreign countries is different life in home country.

- "different from": khác với.

- different life → different from life.

$4.$ My parents share the same hobby as ... ?

- Thiếu dữ kiện, xin phép bỏ qua.

$5.$ His cat isn't the same pretty as mine.

- So sánh ngang bằng: as + adj + as.

- isn't the same → isn't as.

$6.$ This art museum is definitely different as the historical museum.

- "different from": khác với.

- different as → different from.

$7.$ Roses don't have the same fragrance like lotuses.

$8.$ My essay is as length as yours.

- So sánh ngang bằng: as + adj + as.

- length → long.

$9.$ This island isn't as beautiful than those I have visited.

- So sánh ngang bằng: as + adj + as.

- than → as.

$10.$ My mother is a different appearance from me.

- Thiếu mạo từ.

- Bổ sung: "a".