30 + 10 = 40

(x+1)+(x+2)+(x+3)+(x+4)+(x+5)=4+5+6+7+8

5x +(1+2+3+4+5)                    =30

5x  +15                                  =30

5x                                          =30-15

5x                                          =15

x                                            =15:5

x                                            =3

I.Fill in the blanks with: much/ many/ few/ little/ most.

1. She isn’t very popular. She has few friends.

2. Ann is very busy these days. She has little free time.

3. Did you take many photographs when you were on holiday?

4. I’m not very busy today. I haven’t got much to do.

5. This is very modern city. There are few old buildings.

6. The weather has been very dry recently. We’ve had little rain.

7. Most English learners is becoming greater and greater.

8. Many people have applied for the job.

9. Did it cost much to repair the car?

10. Most of my friends live in HCM city.

IV.Complete the second sentence in each pair so that it has similar meaning to the first sentence, using “you”.

1. Vegetarians don’t eat meat. =>If you’re a vegetarian, you shouldn't eat meat.

2. People who live in a cold country don’t like hot weather. => If you live in a cold country, you won't like hot weather.

3. Teachers have to work very hard. =>If you’re a teacher, you will have to work very hard.

4. People who do a lot of exercise stay fit and healthy. => If you want to stay fit and healthy, you should do a lot of exercise.

5. Mechanics understand engines.=>If you’re a mechanic, you will understand engines.

6. People who read newspapers know what’s happening in the world. => If you read newspapers, you will know what's happening in the world.

II. Complete the second sentence in each pair so that it has similar meaning to the first sentence.

1. Eating healthy foods is very important. =>It is very importan to eat healthy food.

2. I suggest having spaghetti and pizza tonight.=> Let’s have spaghetti aand pizza tonight.

3. You need to peel the onion and slice it.=>The onion need to be peeled and sliced.

4. Follow these safety instructions or you may get burnt. => If you follow these safety instructions, you won't get burnt.

5. My aunt has never tasted sushi before. => This is the first time my aunt has ever tasted sushi.

thanh ơi bạn không tự nghĩ bạn đánh câu hỏi lên olm 

Không có hình là ko làm được bạn nhé.

k nh 

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CẢM ƠN CẬU NHỀU

Tháng 3 năm 2014 có 31 ngày

Vì 31 : 7 = 4 dư 3

Nên ngày 30 tháng 4 năm 2014 là thứ tư 

1+4+9+16+25+....+100

Theo quy luật:

1²+2²+3²+4²+5²+...+10²

=385

Sai rùi bạn ơi