Ex 2 : Make questions for the underline words or phrases . ( những chữ viết nghiêng là nhừng từ , cụm từ được gạch chân nha )
1. It took me three hours to finish my homework
-> ...................................................................... ?
2. I need a phone card to phone my parents ?
-> ...................................................................... ?
3.There are many roses in the garden.
-> ...................................................................... ?
4. My mother is cooking in the kitchen at the moment ?
-> ...................................................................... ?
5. My father is 60 kilos -> ................................. ?
6. It takes him 20 minutes to go to school by bike
-> ...................................................................... ?
Ex 1 : Write questions . A friend has just come back from holiday and you are asking him about it .
1. how long / stay there ? ........?
2. stay in a hotel ? ....... ?
3. go alone ? .........?
4. how / travel ? ...........?
5. the weather / fine ? ............?
6. what / do in the evening ? .............?
7. meet any interesting people ? .........?
Tính giá trị biểu thức A , biết rằng A = M : N
Mà M = \(\dfrac{\dfrac{1}{99}+\dfrac{2}{98}+\dfrac{3}{97}+\dfrac{4}{96}+...+\dfrac{97}{3}+\dfrac{98}{2}+\dfrac{99}{1}}{\dfrac{1}{2}+\dfrac{1}{3}+\dfrac{1}{4}+\dfrac{1}{5}+\dfrac{1}{6}+...+\dfrac{1}{100}}\)
N = \(\dfrac{92-\dfrac{1}{9}-\dfrac{2}{10}-\dfrac{3}{11}-...-\dfrac{90}{98}-\dfrac{91}{99}-\dfrac{92}{100}}{\dfrac{1}{45}+\dfrac{1}{50}+\dfrac{1}{55}+...+\dfrac{1}{495}+\dfrac{1}{500}}\)