Dear Thao,
1) I/ just/ receive/ letter/ and/ fully agree/ idea/ which/ suggest/ organize/ a day/ fathers.
I have just received a letter and fully agreed the idea which suggested organizing a day for fathers.
2) We/ celebrate/ Father's day/ as/ people/ Australia/ USA.
We should celebrate the Father's day as people do in Aus. and U.S.A.
3) It/ be/ time/ children/ express/ feelings/ memories/ love/ fathers.
It's time children expressed their feelings, memories and loves to their fathers.
4) In/ opinion/ we/ should celebrate/ this day/ December 20th.
In my opinion, we should celebrate this day on Dec. 20th.
5) I/ suggest/ this day/ because/ October 20th/ day/ Vietnamese Women.
I suggested this day because Oct. 20th is the day of Vietnamese women.
6) And/ two days/ this day/ Vietnamese People's Army Day/ when/ we/ show/ admiration/ soldiers.
And two days after this day is V. P's Army Day when we show our admiration to the soilders.
7) Father's Day/ children/ send cards/ gifts/ fathers.
On F's day, children can send cards and gifts to their fathers.
8) They/ can also/ have parties/ read poems/ or/ sing/ some songs/ make/ fathers/ happy.
They can also have parties, read poems or sing some songs to make their fathers happy.
9) I/ think/ other people/ also/ share/ idea/ so/ we/ should/ write/ more friends.
I think other people should also share their idea so we should write to more friends.
10) I/ look/ forward/ hear/ you/ soon.
I am looking forward to hearing from you soon.

Best wishes,

Mai Huong

Thời gian người A đi là : 12h - 8h = 4h  

Mỗi giờ người A đi được số phần đường : 1 : 4 = 1/4 (quãng đường)  

Người B đi hết số thời gian : 11h30' - 8h30' = 3h  

Mỗi giờ người B đi được số phần đường : 1 : 3 = 1/3 (quãng đường)  

Người A đi trước người B số giờ : 8h30' - 8h = 1/2h  

1/2 giờ người A đi được : 1/4 x 1/2 = 1/8 (quãng đường)  

Mỗi giờ người B rút ngắn quãng đường so với người A : 1/3 - 1/4 = 1/12 (quãng đường)

 Thời gian bắt kịp : 1/8 : 1/12 = 1,5h = 1 giờ 30 phút  

Thời điểm 2 người gặp nhau : 8h30' + 1h30' = 10 giờ

D/s:...............................

There are many people in my village. Most of them are farmers. They grow paddy in the large fields around my village. These paddy fields look very beautiful when the paddy plants are growing. The mountains in the distance and the palm trees all around, add to the beauty of these fields.

The shops in my village are very old. There are few brick buildings. Most of the shops are along the main road in the village. As the people in my village live a simple life, their needs are not many. So, many of the things found in the shops in the towns are not found in the shops in my village.

The people in my village are good. They go not like to quarrel or fight with others. Every evening they meet one another and talk about many things. If they need any help or advice, they go to the village chief. The chief is a wise man. He gives good advice and keeps the people happy.

Indeed, I like my village very much.

Bạn có thể tham khảo^^

1. This computer / not sell / here / today .

=> This computer is not sold here today.

2. Pictures / draw / that little boy / two weeks ago .

=> Pictures was drawn by that little boy two weeks ago .

3. The tables / clean / every morning .

=> The tables are cleaned every morning .

4. The cat / feed / every five hours .

=> The cat is fed every five hours .

5 . The lights / set up / her father / yesterday .

The lights were set up by her father yesterday .

1. Lan (have)..........is having..........math lesson now.

2. What does you sister (do) .........do..........?

3. There (be) ................. ficnic will my famly (bạn đánh sai ak?)

Rearrange into the correct sentences, using the words given: Xắp xếp các từ thành câu
1.lot/ a / of/ traffic/ Hanoi/ there / in / is.
=> There are a lot of trafic in Hanoi.
2.matter/ is/ what/ the / Hoa/with/ ?
=> What is the matter with Hoa?
3.language/ which / does/ your/ speak/ friend/ ?
=> Which language does your friend?

My sister doesn’t play tennis as well as she __did_ last year.

Thực hiện các thí nghiệm sau:

I. Cho kim loại Na tác dụng với dung dịch H₂SO₄ dư

II. Cho dung dịch Na₂CO₃ vào dung dịch Ca(OH)₂

III. Điện phân dung dịch NaCl với điện cực trơ , có màng ngăn.

IV. Cho Cu(OH)₂ vào dung dịch NaNO₃

V. Sục khí NH₃ vào dung dịch Na₂CO₃

VI. Cho dung dịch Na₂SO₄ vào dung dịch Ba(OH)₂

Các thí nghiệm đều điều chế được NaOH là

A. I, IV, V

B. I, II, III

C. II, III, VI

D. II, V, VI