Viết lại các câu sau bằng các dùng tính từ kép:

1. The trip lasts ten days

It is ______a ten-day trip_____

2. The recess lasts twenty minutes

It is ______a twenty-minute trip______

3. The film lasts three hours

It is ______a three-hour film___

4. The race is five hundred meters long.

It is _____a five hundred - meter long race_____

5. a comic book has one hundred pages

It is ______a one hundred - page book_______

6. The pen costs ten thousand dong

It is ____________a ten- thousand dong pen_____

7. The house has three storeys

It is _______is a three - storey house________

8. The road is two miles long

It is ________is a two - mile long____________

khối 4 ít hơn khối 5 số học sinh là

120-114=6 học sinh

mỗi học sinh trồng số cây là

18:6=3 cây

khối  trồng số cây là

114x3=342 cây

khối 5 trồng số cây là

342+12=360 cây

16.But for your help, I couldn’t have passed the exam. Had _____you not helped me , i couldn't have passed the exam______________________________________.
17. “When will you come back, Nga?” I asked _______nga when she would come back____________________________________.
18.No one has bought this house. This house ______hasn't been bought_____________________________________.
19.She didn't take an umbrella so she got wet. She wouldn't __________have got wet if she had taken an umbrella_________________________________.
20.It was a mistake for him to buy that house. He shouldn’t _________have bough that house________________________________.

10.My school has over 800 students. There are __________800 students in my school_________________________________.
11.People say that that plane crashed into the mountains. That plane __________is said to be crash into the mountains_________________________________. 12.She tries to learn English well so as to communicate with foreigners. She tries to learn English well with ______a view to communicating with foreigners__________________
13.I started teaching English three years ago. I have___taught english for three years________________________________________.
14.No one in my class is more intelligent than Lan.

lan is the most intelligent in my class
15.This exercise was very difficult. We couldn’t do it. This exercise was so________difficult that we couldn't do it___________________________________.

số lớn là

(111+9):(5-3)x 5= 300

số bé là 

300-111=189

vừa nãy mình nhầm đề. xin lỗi