1.It's education that helps with the........of knowledge.(rich)

2.Esperanto proves to be useless because it is.........(popular)

3.His.........makes him a famous person.(popular)

4.His..........makes everybody dislike him a lot.(popular)

5.Everything has its own.........(limit)

6.The..........children are opening their presents.(excite)

7.Will you please give me some..........explanation?(far)

8.You should..........yourselves with the environment.(family)

9........., they didn't intend to do it.(origin)

10..........speak louder than words.(act)

11.The explanation of the accident is very.........(confuse)

12.His.........is unreasonable(confuse)

13.Visitors said that the.........of the people in Viet Nam was most unforgettable.(hospitable)

14.You can't drink water from that well because it is.........(pure)

15.We think that Mother's Day should be celebrated...........(nation)

1.The........of English is that it is becoming simpler and simpler.(strong)

2.A right amount of calcium added to our food will help to...........our weak bones.(soild)

3.In ancient Greece, the owl was a symbol of...........(wise)

4.Laser beams can kill cancer cells while leaving the surrounding ones...........(harm)

5.Freedom of.........is one of the fundemental rights.(speak)

6.What old people fear most is..........(lonely)

7.There are many.........programs at the Festival in Hue.(culture)

8.Although some societies are..........underdeveloped, their languages are very complex.(technology)

1.our parents are very..........that we are working harder.

A.please B.pleased C.pleasant D.pleasure

2.........the old man has never traveled by plane before, he is not nervous or afraid.

A.thus B.Therefore C.although D.because

3.The wind last night was so strong that it blew the roof of the house.........

A.apart b.about c.down d.off

4.we went to TSN airport to...........off a friend leaving for paris.

a.see b.tell c.say d.join

5.if you want to save money, you should.........the amount of water your family uses.

a.increase b.reduce c.adapt d.repair

6.a lot of fish, toads and frogs...........from electric shock waves

a.died b.killed c.ran d.fed

Ta co:

1/2+1/6+1/12+1/20+1/30+1/42

=1/1.2+1/2.3+1/3.4+1/4.5+1/5.6+1/6.7

=1-1/2+1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+1/6-1/7

=1-1/7

=6/7

Ta co: 6/7=6.10101/7.10101=60606/70707 

Vi 60606/70707=60606/70707 nen 6/7=60606/70707

Vay 1/2+1/6+1/12+1/20+1/30+1/42 = 60606/70707

Bài 1:Tìm và sửa lỗi sai

1.When an airplane crashes, a lot of people killed at the same time.

2.All motorcycle accidents involve young men between 16 and 25.

3.Every summer, millions young people risk skin cancer from sunbathing because they want to look healthier or more beautiful.

4.Most of the money comes from advertising clothes, sports equipment, soft drinks, and another product.

5.This novel, which written by a well-known write, should be read.

6.The students didn't go to the school yesterday because it snowed heavily.

7.We couldn't come to class on time because it was a serious traffic-jam.

8.They can't speak English fluently because they have English four periods a week.

9.Although Hoa's family didn't use many water, they got an enormous water bills

10.Although we don't celebrate Mother's Day and Father's Day in our country, we love and respect them as much as others does.

11.Minh seldom pays his bills on time, his brother does, too.

Bài 1: Chữa lỗi sai và sửa lại

1.Mr. Jones is going to collect all the bags and taken them to the garbage dump

2.Hanh can't go to the movies with us tonight .Therefore , she had to do her homework

3.Passover is a festival which is celebrate in late March or early April

4.Tet is a Lunar New Year holidays which occurs in late January or early February

5.Mount Pinatubo, who is a volcano in the Philippines, erupted in 1991

6.Nam got wet therefore he forgot his umbrella yesterday.

7.i am write to you about the short stop of your trucks around my house on their way to the north

8.i think it would be better if we use nanana leaves instead of paper or plastic bags warpping food.

9.If the government wanted to build a nuclear power plant at the end of your street, you would probably protest about it.

10.Living next to a nuclear power plant is dangerous than driving a car.

1.There's no........in that village (electric)

2.Your recent work has some ...........(improve)

3.Air..........makes us unhealthy (pollute)

4.Journalists are not always...........in what they write (accuracy)

5.they are very.............in their approach(science)

6.they offer a ..........service to their customers(person)

7.bad planning leads to..........later(difficult)

8.he wants to ..........his knowledge of computers(wide)

9.be.........to tell them what you think should be done (decide)

10.there is a ............of water in this region (short)

11.if it doesn't rain soon,there will be a great..........of water (short)

12.we can protect the environment by ..........air pollution (reduce)

13.the price of..........has gone up again (electric)

14.we'll live a happier and..........life if we keep our environment clean (health)

15.she was..........pleased that she passed the exam (extreme)

1.In homes, presents................round the Christmas tree on Chritsmas day

A.place B.are placing c.placed d.are placed

2.passover, a jewish festival,...............freedom from slavery

a.is celebrated b.celebrate c.celebrates d.celebrating