1. He works on a farm. He grows vegetables and raises cattle. He is a .....farmer........

What time do your children go

to school

I. Mỗi câu sau có 1 lỗi sai. Hãy tìm và sửa các lỗi đó.

1. Would you like coming to my birthday party, Mai?         coming=> to come

2. You work to much, so you should relax now.                to=> too

3. What do Mai do after school?                                              do=> does

4. I want lie on the couch in front of the TV now.                    lie=> to lie

5. We are going to visiting our teacher.                                visiting=> visit 

6. People are living longer so there are much elderly people . much=> more

7. Let's going to the school library at recess.                    going=> go

8. There is an interesting movie at on TV now.                  at on => on

9. Minh often practices the guitar at his free time.                  at=> in 

10. What about come to my house for lunch?                    come=> to come

a)\(\frac{8}{9}.\frac{15}{16}.\frac{24}{25}.....\frac{2499}{2500}\) \(=\frac{2.4}{3^2}.\frac{3.5}{4^2}.\frac{4.6}{5^2}.....\frac{49.51}{50^2}\)\(=\frac{\left(2.3.4.....49\right)\left(4.5.6....51\right)}{\left(3.4.5.....50\right)\left(3.4.5.....50\right)}=\frac{2.51}{50.3}=\frac{1.17}{25}=\frac{17}{25}\)

viết lại câu theo hình thức cảm thán bắt đầu bằng How , hoặc What 
that car is very fast
what a very fast car !
the villag is quiet
how quite village is!
the journey is so interesting
what a interesting journey!
the building is tall
how tall building is!

xắp xếp các từ:

1:youngest / in / the / your / student / ís / school / who ?
Who is the youngest student in your school?

2: house / she / family / looking /  Hue / for / is / her / a / for / in.
She is looking for Hue in her family house.

3:sister / elder / beautiful / her / is / but / Mai / beautiful / more / is.
Mai is beautiful elder but her sister is more beautiful.

4:modern / has / house / bathroom / a / my / large.
My modern house has a large bathroom.

5:like / movie / you / me / would / toninght / see / a / with?
Would you like to see with me a movies tonight?

6:find / an / is / in / to / apartment / difficult / Ha Noi / it .
It is an difficult to find an apartment in Ha Noi.
7 Paris / cities / one / biggest / in / is / the / of / world / the.
Paris is one of the biggest cities in the world.

                              Bài này mang tính chất tham khảo thui nhé

Hi. My name is Tu.I lives with my parents, my younger brother and me in a lovely apartment in Ha Noi City. My apartment is not very big but it is comfortable. There are five rooms in a partments: a livingroom, two bedrooms, a kitchen and a bathroom. The livingroom is the biggest of all. It is beautiful furnished. The bathroom is very beautiful. It has a sink, a tub and a shower. The kitchen is very modern and has everything: refrigerator, washing machine, dishwasher, gas cooker, electric stove. kitchen table, .... I'm bedroom is not large, but it is very bright and its colors and nice. I love my apartment a lot.
 Xong rui

\(\frac{1}{3}+\frac{1}{6}+...+\frac{2}{x\times\left(x+1\right)}=\frac{2007}{2009}\)

\(\frac{1\times2}{3\times2}+\frac{1\times2}{6\times2}+...+\frac{1\times2}{x\times\left(x+1\right)}=\frac{2007}{2009}\)

(\(\frac{1}{2\times3}+\frac{1}{3\times4}+\frac{1}{4\times5}+...+\frac{1}{x\times\left(x+1\right)}\))\(\times\)2=\(\frac{2007}{2009}\)

\(\frac{1}{2}-\frac{1}{3}+\frac{1}{3}-\frac{1}{4}+...+\frac{1}{x}-\frac{1}{x+1}\)=\(\frac{2007}{2009}\div2\)

\(\frac{1}{2}-\frac{1}{x+1}=\frac{2007}{4018}\)

\(\frac{1}{x+1}=\frac{1}{2}-\frac{2007}{4018}\)

\(\frac{1}{x+1}=\frac{1}{2009}\)

suy ra x+1=2009

x=2009-1

x=2008

vậy x=2008