VIII.
1. She hasn't studied French for ten years.
2. Air pollution can lead to health problems in bis cities.
4. We will be better if we don't throw rubbish on the streets.
5. American use lots of alngs, so it is difficult for me to understand.
6. Thanks to progress in science and technology, human life is becoming better and better.
7. She always enjoys talking with her grandfather. He always tells her many great stories.
9. The children promised to be back at 9 o'clock.
IX.
1. I haven't seen her for 3 years.
2. Because of being lazy, she didn't pass the exam.
3. Man natural disasters have been caused by global warming.
4. If I didn't have to help my dad with something, I could hang out with you.
5. Hung's father drives more carefully than Hung.
$\text{~ Chúc bạn học tốt ~}$
$\text{~ Nếu được thì cho mk trả lời hay nhất nha! ~}$
