We use a lot of energy at home and it costs us a lot. To save energy, we should use electricity, water and gas economically. For example, we should turn of the lights and air conditioners when we go out. Next, we should use electrical equipment which are energy-saving. Using lights and fans that have low capacity, or using equipment which reserve electricity. Not only do these help us to save money but also they work effectively. In short, we need to save energy so that energy isn't run out and continues to serve human's life.
Bài IV
1b 2b 3c 4b 5b
Bài VII
1 - If you drop litter, the environment will be polluted
In(A) the future, home robots(B) will to do(C) all our housework(D)
=> In the future, home robots will be able to do all our housework
You are not rich. You can't build new house and buy car
=> If I were rich, I would build new house and buy car
Task 1 Writing
1 - How long does it take you to ride your motorbike to work?
2 - Some of my friends think documentaries are not interesting.
3 - Do you often watch fireworks display on New Year’s Eve?
4 - There will be modern driverless cars to replace normal cars.
5 - Do you know Canadians like playing ice hockey?
3) Despite being young , he performs very well
4) In spite of comedy, I didn't find it funny at all
37. Nam said he liked to do physics experiment
38. If I were you I would work hard to pass the exam
39. I haven't visited my hometown for 2 months
40. This book has been written many times