Chọn lỗi sai rồi sửa 
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VIII. Choose the word or phrase that needs correction.
1. In the future, I think (A) we are travelling (B) much further (C) than we do (D) now.
2. Nowadays, most (A) people in (B) Africa won't use (C) energy from (D) natural gas.
3. Your (A) work is bad but her (B) is worse, and mine (C) is the worst of all (D).
4. Bullet trains will (A) be faster (B), safer (C), and riders can't (D) avoid traffic jams.
5. Historians (A) said the (B) maple leaf become (C) a symbol of Canada as early as (D)
the 1700s.
6. Yesterday evening I did (A) all my (B) homework, but my sister didn't did (C) hers
(D).