=>
I/
1. A /aʊ/ còn lại /əʊ/
2. D /h/ còn lại âm câm
3. A /d/ còn lại /t/
4. C /ð/ còn lại /θ/
5. B /s/ còn lại /z/
II/
1. C nhấn âm 2 còn lại 1
2. B nhấn âm 1 còn lại 2
3. D nhấn âm 1 còn lại 2
4. C nhấn âm 2 còn lại 1
III/
1. B largest
2. B ago -> bị động thì qk
3. D bão
4. B had gone - cleaned
5. C truyền thống
6. A câu đk loại 1
7. A is suffering
8. C câu đk loại 2
IV/
1. Because she was sick, she went to bed early.
2. She can't work hard because of being very old.
3. Because of his hard life, he left school.
4. It's time you cleaned your room.
5. We started learning English 4 years ago.
V/
1. Many rivers and lakes are poisoned because factories produce waste and pour it into rivers and lakes.
2. The polluted environment makes birds leave their habitats and plants die.
3. Plastic bags are a major source of waste, so we should not throw them everywhere.
4. The contaminated food results in people's poor health.
5. The air people breathe gets polluted due to fumes released from factories.
6. Because there was a loud noise nexxt to my door last night, I couldn't sleep.
7. The tsunami made many people in this area homeless.
8. Many plants and trees died since the acid rain happened last month.