Đề bài: Tìm lỗi sai và sửa.
1. furnitures ⇒ furniture
2. experiment ⇒ experimenting
3. made ⇒ are making
4. destroy ⇒ destroys
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1. Mrs Lien called about her furnitures delivery
2. Bell started experiment with ways of transmitting speech over a long distance
3. Ba and Bao made arrangements to play chess now
4. Each year , fire destroy homes and injures children because someone plays with matches