My house had a hole in the roof and we got wet when it rained.

1.      at recess/ take part in/ different/ students/ activities.

Students take part in different activities at recesss 

2.      famous people/ and/ events/ in History/ we/ learn about.

We learn about famous people and events in History

3.      Physics class/ experiments/ we/ do/ often/ in.

We often do experiments in Physics class

4.      Geography/ very interesting/ it is/ my favorite/ is/ subject/ because/ and important.

Geography is my favorite subject because it is very interesting and important

5.      Everyone/ rings, / and classes/ when/ begin again/ goes indoors/ the bell.

Whe the bell rings, everyone goes indoors and classes begin again

6.      and write/ we/ Literature/ in/ learn about/ books/ essays.

We learrn about  books and write essay in Literature

7.      Susan/ drawing/ good at/ is/ very.

Susan is very good at drawing

8.      have/ four classes/ often/ at school/ we/ in the morning.

At school, we often have four classes  in the morning

9.      how/ her Science class/ experiments/ learns/ in/ to do/ she.

She learns how to do experiments in her Science class

enjoys/ household/ Ba/ repairing/ appliances. 

Ba enjoys repairing household appliances 

She likes Physics best.

Her favorite subject is Physics

He has a letter from his American pen pal.

His American pen pal sends him a letter 

His younger brother isn’t interested in watching cartoons.

His younger brother doesn’t like watching cartoons

Tomatoes are 10.000 dong.

Tomatoes cost 10.000 dong

Our house is older than any other house in the living center.

Our house is the oldest house in the living center

Lan is the youngest of the three sisters.

Lan has two older sisters

At recess we like talking best.

Talking is the most activity at recess

There are eight hundred stamps in Hoa’s collection.

Hoa’s collection has eight hundred stamps

Mr. Hoang walks to work for half an hour.

 It takes half an hour for Mr.Hoang to walk to work

What subject do you like best?

What’s your favorite subject?

1.My new school is more modern than my old school.

=> My old school __is older than my new school____

2.Market is cheaper than the shopping center.

=> The shopping centre _is more expensive than market___

3.There are twenty classrooms in my school.

=> My school _has twenty classrooms_____

4.Living in countryside is quieter than living in a city.

=> Living in a city __is noisier than living in countryside__

5.Minh’s calculator is better than Ha’s one.

=> Ha’s calculator __is worse than Minh's caculator_______

6.Nga is more hard-working than her brother.

=> Nga’s brother ____is lazier than Hoa___

7.Nam’s exam results are worse than Hoa’s one.

=>Hoa’s exam results _are better than Nam's one_______

8.Nguyen Trai street is larger than Quang Trung street.

=> Quang Trung street _is smaller than Nguyen Trai street_

Ỏooooooooooooo.Thăn kiu nhen

h, x³ + 3x² + 3x + 1 

= x³ + 3.x².1 +3.x.1² +1³

= (x +1)³

f, a³ - 6x² + 12a - 8

= a³ - 3.a².2 + 3.a.2² - 2³

= (a - 2)³

k, x³ - 27 = x³ - 3³ = (x - 3).(x² + x.3 + 3²)=(x - 3).(x + 3x +9)

escaped

B